{"title":"Audio Research","description":"Audio Research is one of the oldest continually operating manufacturers in American audio. The company was founded in 1970 in Minneapolis with one goal in mind: to advance the state-of-the-art in music reproduction. Today, Audio Research remains a performance-oriented company by philosophy and design. New product introductions are driven only by genuine advances in technology and performance - the HIGH DEFINITION that is the hallmark of the company's products. The company has grown steadily over the last 40 years, with a network of top audio specialist retailers across North America and distributors throughout Europe, Asia and South America.","products":[{"product_id":"audio-research-foundation-ph9-hybrid-phono-pre-amplifier","title":"Audio Research Foundation PH9 - Hybrid Phono Pre Amplifier","description":"Foundation PH9 - New! Phono Preamplifier \u003cbr\u003e\u003cbr\u003e\n\nThe PH9 phono preamplifier is a great pairing with most cartridge and turntable combinations. A trio of 6H30 vacuum tubes are at the core of a simple and clear signal path to provide the most transparent preamplification possible. Five different impedance settings allow for cartridge loading, which can be changed on the fly with the included metal remote. Cartridge impedance, tube hours, auto shutdown, and other features are included in the menu system.\u003cbr\u003e\u003cbr\u003e\n\nSince 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.\u003cbr\u003e\u003cbr\u003e\n\nFREQUENCY RESPONSE\n±.2 dB of RIAA, 5 Hz to 20kHz; 1 dB points below 0.3Hz and above 80 kHz.\u003cbr\u003e\n\nDISTORTION\nLess than .015% at 3V RMS 1kHz output.\u003cbr\u003e\n\nGAIN\n55 dB at 1 kHz\u003cbr\u003e\n\nINPUT IMPEDANCE\nSelectable loads: 47k, 1000, 500, 200, 100 Ohms.\u003cbr\u003e\n\nOUTPUT IMPEDANCE\n200 ohms. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms \nminimum and 2000 pF maximum).\u003cbr\u003e\n\nOUTPUT POLARITY\nNon-inverting.\u003cbr\u003e\n\nMAXIMUM INPUT\n80 mV RMS at 1kHz.\u003cbr\u003e\n\nRATED OUTPUTS\n0.5V RMS 10 Hz to 60 kHz, into 100K ohm load (maximum balanced output \ncapability is 0.46V RMS at less than 0.5% THD at 1kHz).\u003cbr\u003e\n\nCONTROLS\n6 Push Buttons:  Power, Menu, Option, Enter, Input, Mute.\u003cbr\u003e\n\nPOWER SUPPLIES\nElectronically regulated low and high voltage supplies.  Automatic 2 minute \nwarm-up\/brown-out mute.  Line regulation better than .01%.\u003cbr\u003e\n\nNOISE\n\u0026gt; 77 dB, shorted inputs.\u003cbr\u003e\n\nTUBE COMPLEMENT\n(3)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.\u003cbr\u003e\n\nPOWER REQUIREMENTS\n100-125VAC 60Hz (200-250VAC 50\/60Hz) 120 watts maximum. Standby: 2 \nwatts.\u003cbr\u003e\n\nDIMENSIONS\u003cbr\u003e\nWidth: 19” (48 cm) \u003cbr\u003e\nHeight: 6.5” (13.7 cm) \u003cbr\u003e\nDepth: 13.7” (34.8 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel.\u003cbr\u003e\nWeight:   15.4 lbs. (7 kg) Net; 23.5 lbs. (10.7 kg) Shipping.\n\n","brand":"Audio Research","offers":[{"title":"Silver","offer_id":57409468465484,"sku":"AUDIORPH9-S","price":7406.67,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57421004538188,"sku":"AUDIORPH9-bB","price":7406.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Foundation-PH9-Silver.jpg?v=1777486613"},{"product_id":"audio-research-cd6se-cd-player","title":"Audio Research CD6SE - CD Player","description":"CD6 SE\u003cbr\u003e\u003cbr\u003e\n\nThe compact disc format is more than 35 years old, with millions of titles. Simultaneously, digital downloads and computer music storage has skyrocketed in popularity. Combining a super high-resolution compact disc player and a digital-to-analog converter in one compact chassis, the CD6SE is a perfect fit for modern music playback. The CD6SE is positioned to optimize most any digital format with spectacular results.\u003cbr\u003e\u003cbr\u003e\n\nThe CD6SE offers disc playback via the Philips Pro2 transport (still considered the industry standard), plus four digital inputs (USB, coaxial RCA, Toslink, and AES\/EBU). All inputs handle 24 bit \/ 192k resolution.\u003cbr\u003e\u003cbr\u003e\n\nBenefitting from what Audio Research has learned in the development of the Reference DAC and CD9, the CD6SE utilizes quad 24-bit DACs running in mono mode, with dual master oscillators for highest performance; one for 44.1\/88.2\/176.4 sample rates, the other for 48\/96\/192kHz sample rates. Sample rate conversion is selectable for all inputs, allowing playback in native resolution or via upsampling, including compact disc and USB. Additionally, there is a selectable digital filter offering fast or slow roll-off. In addition to the digital inputs, the back panel includes two digital outputs (AES\/EBU and BNC), and single-ended RCA and balanced XLR outputs.\u003cbr\u003e\u003cbr\u003e\n\nSonically, the CD6SE is a stunner, uncovering new musical detail in every corner of your recordings and providing startling dynamics, both micro and macro. The top end is extended, airy and pure, while bass definition and impact are precise and powerful. The recording venues are lifelike, broad and expansive or close-up and intimate, depending on what was captured by the recording engineer. Like great analog, listening to music through the CD6SE draws you into the performance, not just the notes, with resolution and transparency that are in service of the music. Experience your music in High Definition®.\u003cbr\u003e\u003cbr\u003e\n\nElectronic Specifications:-\u003cbr\u003e\u003cbr\u003e\n\nFREQUENCY RESPONSE:\u003cbr\u003e\n +0-3dB, 3Hz to 96kHz at rated output. 0.15dB 20Hz to 20kHz. (Balanced, 200k ohms load) @ 192kHz sample rate.\u003cbr\u003e\u003cbr\u003e\n\nDISTORTION:\u003cbr\u003e\nTHD+N Less than .004% at 2V RMS BAL output\u003cbr\u003e\u003cbr\u003e\n\nSIGNAL-NOISE-RATIO:\u003cbr\u003e\n110dB\u003cbr\u003e\u003cbr\u003e\n\nDYNAMIC RANFE (AES17):\u003cbr\u003e\n111dB\u003cbr\u003e\u003cbr\u003e\n\nIMD (SMPTE):\u003cbr\u003e\n.003%\u003cbr\u003e\u003cbr\u003e\n\nRMS NOISE LEVEL:\u003cbr\u003e\n - 95dBV (20-20kHz)\u003cbr\u003e\u003cbr\u003e\n\nGAIN:\u003cbr\u003e\n16.5dB Balanced, 8.3dB SE.\u003cbr\u003e\u003cbr\u003e\n\nINPUT IMPEDANCE:\u003cbr\u003e\nDigital: 75 ohms RCA, 110 ohms AES\/EBU, OPT 660nm TOSLink.\u003cbr\u003e\u003cbr\u003e\n\nOUTPUT IMPEDANCE:\u003cbr\u003e\n500 ohms Balanced, 250 ohms SE Main (2), 20K ohms minimum load and 2000pF maximum capacitance.\u003cbr\u003e\u003cbr\u003e\n\nOUTPUT POLARITY:\u003cbr\u003e\nNon-inverting. \u003cbr\u003e\u003cbr\u003e\n\nMAX. OUTPUT:\u003cbr\u003e\nAt 0.0dB input, 5V RMS into 200K ohm balanced load.\u003cbr\u003e\u003cbr\u003e\n\nDIGITAL SAMPLE RATES: \u003cbr\u003e\n24 bits @ 44.1kHz to 192kHz, SPDIF, AES\/EBU and USB 2.0 HS.\u003cbr\u003e\u003cbr\u003e\n\nUPSAMPLING:\u003cbr\u003e\nSelect upsampling or Native mode; CD, RCA, AES\/EBU, TOS upsample to 176.4 or 192kHz.\u003cbr\u003e\u003cbr\u003e\n\nMASTER OSCILLATOR:\u003cbr\u003e\n22.579mHz ±20Hz for 44.1, 88.2 \u0026amp; 176.4kHz. 24.576mHz ±20Hz for 48, 96 \u0026amp; 192kHz.\u003cbr\u003e\u003cbr\u003e\n\nINTRINSIC JITTER:\u003cbr\u003e\n \u0026lt; 10ps\u003cbr\u003e\u003cbr\u003e\n\nOUTPUTS DIGITAL:\u003cbr\u003e\nXLR Balanced AES\/EBU 110-ohms 4V P-P, BNC coax SPDIF 75-ohms 0.7V P-P.\u003cbr\u003e\u003cbr\u003e\n\nCHANNEL SEPARATION:\u003cbr\u003e\n103dB @ 1kHz.\u003cbr\u003e\u003cbr\u003e\n\nPUSH BUTTONS:\u003cbr\u003e\nPower, Previous, Stop, Pause, Play, Next, Input. \u003cbr\u003e\u003cbr\u003e\n\nSIGNAL FORMAT (DISC):\u003cbr\u003e\nSample freq. 44.1kHz, Quantization bit; 16bit linear\/channel, Channel bit rate; 4.3218Mb\/sec, Channel modulation code; EFM (8-14 modulation), Error Correction; CIRC.\u003cbr\u003e\u003cbr\u003e\n\nDRIVE MECHANISM (TOP LOAD):\u003cbr\u003e\nWow \u0026amp; Flutter; Un-measureable (Quartz stability); Discs; Accepts 5″ (12cm) and 3″ (8cm) sizes.\u003cbr\u003e\u003cbr\u003e\n\nOPTICAL PICKUP:\u003cbr\u003e\nType; 3-beam LDGU (Laser Diode \u0026amp; Grating Unit), with holographic diffraction light pen, Laser; GaAlAs semiconductor, 780nm, 0.5mW max. output, Servo; Digitally-controlled low inertia linear positioning actuator.\u003cbr\u003e\u003cbr\u003e\n\nJITTER REDUCTION:\u003cbr\u003e\nHigh-stability crystal-controlled re-clocking for all outputs.\u003cbr\u003e\u003cbr\u003e\n\nDISPLAY:\nSix-digit vacuum fluorescent with optical filter; LED display; CD, AES, USB, RCA, TOS, Fast, Slow, Upsample, Power, 44.1, 48, 88.2, 96, 176.4, 192kHz.\n\nREMOTE BUTTONS:\u003cbr\u003e\nRepeat track\/disc, 0-9 digit entry keys, Scan ten seconds each track, Pause program, Stop program, Play, Shuffle tracks, Program enters selection on program list, Time elapsed, remaining track, remaining disc, A\/B repeat segment, Filter select, Input select, Pause, Play, Skip , Skip , FF, FR, Upsample\/Native mode, DSP-DN, DSP-UP\u003cbr\u003e\u003cbr\u003e\n\nPOWER REQUIREMENTS:\u003cbr\u003e\n105-125VAC 60Hz (210-250VAC 50\/60Hz) 23 watts maximum. Sleep mode 0.5 watts maximum.\u003cbr\u003e\u003cbr\u003e\n\nDIMENSIONS:\u003cbr\u003e\nWidth: 19″ (48 cm)\u003cbr\u003e\nHeight: 5.25″ (13.4 cm) (standard rack panel)\u003cbr\u003e\nDepth: 12.25″ (31.1 cm)\u003cbr\u003e\nHandles extend 1.50″ (3.8 cm) forward of the front panel.\u003cbr\u003e\u003cbr\u003e\n\nWEIGHT:\u003cbr\u003e\n25.9 lbs. (11.8 kg) Net; 34 lbs. (15.5 kg) Shipping.\n","brand":"Audio Research","offers":[{"title":"Silver","offer_id":57409468498252,"sku":"AUDIORCD6SE-S","price":8331.67,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57421006045516,"sku":"AUDIORCD6SE-B","price":8331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-CD6SE-Black-angle.jpg?v=1777486617"},{"product_id":"audio-research-foundation-ls28-line-stage-pre-amplifier","title":"Audio Research Foundation LS28  Line-Stage Pre Amplifier","description":"LS28 - Line Stage Preamplifier \u003cbr\u003e\u003cbr\u003e\n\nThe LS28 line stage is a flexible and intuitive preamplifier. Four balanced and four single-ended inputs, and two sets of both balanced and single-ended outputs, allow maximum connectivity. The straightforward menu allows control of numerous parameters, including input naming, tube hours, auto shutdown, and home theater passthrough. Phase invert and mono are also standard functions. At the heart of the LS28 are four 6H30 vacuum tubes in the analog circuit. While the LS28 is the perfect match for any Audio Research amplifier, it has been designed to work with nearly any amplifier on the market today.\u003cbr\u003e\u003cbr\u003e\n\nSince 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support.\u003cbr\u003e\u003cbr\u003e\n\nTECHNICAL SPECIFICATION:-\u003cbr\u003e\u003cbr\u003e \n\n\nFREQUENCY RESPONSE\n+0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load)\u003cbr\u003e\n\nTHD+NOISE\nLess than .007% at 2V RMS BAL output.\u003cbr\u003e\n\nNOISE\nLess than -100dBv at max volume (103).\u003cbr\u003e\n\nDYNAMIC RANGE\n122dB (AES17).\u003cbr\u003e\n\nCROSSTALK\n-105dB\u003cbr\u003e\n\nGAIN\nMain output: 18.7dB balanced output. (9.3dB SE output.)  Record output: 0dB (Processor input: 0dB balanced out).\u003cbr\u003e\n\nINPUT IMPEDANCE\n100K ohms Balanced, 50K ohms SE. 8 Inputs - 4 balanced, 4 single-ended.\u003cbr\u003e\n\nOUTPUT IMPEDANCE\n600 ohms Balanced, 300 ohms SE Main (2), 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 Main, 1 Record (XLR and RCA connectors).\u003cbr\u003e\n\n\n\nOUTPUT POLARITY\nNon-inverting.\u003cbr\u003e\n\nMAXIMUM INPUT\n16V RMS BAL, 8V RMS SE.\u003cbr\u003e\n\nRATED OUTPUTS\n2V RMS (1V RMS SE) 1Hz to 200kHz into 200K ohm balanced load (maximum balanced output capability is 17V RMS at less than 0.5% THD at 1kHz).\u003cbr\u003e\n\nCONTROLS\nRotary volume selector (103 steps) and rotary input selector. Push buttons: Power, Menu, Enter, Mono, Invert, Mute\u003cbr\u003e\n\nPOWER SUPPLIES\nElectronically regulated low and high voltage supplies.  Automatic 45 sec. warm-up\/brown-out mute.  Line regulation better than .01%.\u003cbr\u003e\n\nTUBE COMPLEMENT\n(4) 6H30P dual triode.\u003cbr\u003e\n\nPOWER REQUIREMENTS\n105-125VAC 60Hz (200-250VAC 50\/60Hz) 130 watts maximum.\u003cbr\u003e\n\nSTANDBY\n2W","brand":"Audio Research","offers":[{"title":"Black","offer_id":57409469120844,"sku":"AUDIORFOUNDLS28-B","price":7406.67,"currency_code":"GBP","in_stock":true},{"title":"Silver","offer_id":57421008404812,"sku":"AUDIORLS28S","price":7406.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-LS28.jpg?v=1777486626"},{"product_id":"audio-research-reference-10-line-stage-pre-amplifier","title":"Audio Research Reference 10 Line Stage Pre Amplifier","description":"In 2010 Audio Research announced the Reference Anniversary preamplifier, a special limited edition product commemorating their 40th anniversary. It was acclaimed by many as the finest preamplifier available and a fitting tribute to all of the classic Audio Research products that were introduced during the forty years that preceded it. Included in the Reference 10 are critically chosen new components, proprietary custom-made capacitors, wiring, and new connectors that cumulatively provide a level of performance never before achieved. Key Audio Research design traits remain: The signal path is fully discrete, all-tube, pure Class-A, with zero feedback. Other attributes and choices remain, too: Each unit is completely hand-soldered and hand-constructed in our Minnesota facility using the finest materials, with major components such as custom transformers, plated-through circuit boards, and casework sourced locally. All engineering is performed in-house.\u003cbr\u003e\u003cbr\u003e\n\n\nThe Reference 10 follows a new aesthetic path as well. It has a very modern and elegant finish that will attract new admirers without alienating fans of our older products. The front panel of the main control unit has a new, large round volume knob on the right side, with two buttons under it for Power and Mute—the only two buttons on the unit—and a large display on the left. Our logo is above the knob on the right, making this the first asymmetrical Audio Research preamplifier ever. The left side of the front panel contains an interactive touch-screen display that allows the user to intuitively control almost all functions.\u003cbr\u003e\u003cbr\u003e\n\nThe power supply chassis, connected to the main unit via two umbilical cords, simply has one green LED under its offset Audio Research logo. All of the side panels are finished identically to the front panels: Natural anodized, one quarter-inch thick, with no screws visible. The entire chassis (including rear panel) is painted silver to complete the look. There are beautiful new, clear acrylic covers with a revised perforation pattern. And, there is no printing on the front panel of either chassis.\u003cbr\u003e\u003cbr\u003e\n\nAfter the single 20A power cord, the Reference 10 is completely dual-mono from the power supply through the audio circuit. There are dual, separate low- and high-voltage transformers for each channel; there is dual-mono vacuum-tube regulation (one 6H30 and one 6550WE per channel), dual-mono audio circuits (four 6H30 per channel), and enough energy storage for a serious power amplifier.\u003cbr\u003e\u003cbr\u003e\n\nJust as the Reference Anniversary was shockingly better than its predecessors, the Reference 10 offers a further level of resolution, refinement and dynamism that vividly improve the musical experience in every way. As we have said before, words can only fall short of your own experience; to understand how much more profound listening to your favorite recordings can be, you must hear the Reference 10. It is stunning.\u003cbr\u003e\u003cbr\u003e\n\nSpecifications:-\u003cbr\u003e\n\nFREQUENCY RESPONSE\n+0 -3dB 0.1Hz to 200kHz at rated output. (BALANCED, 200k ohms load.)\u003cbr\u003e\n\nDISTORTION\nLess than .006% at 2V RMS Balanced output.\u003cbr\u003e \n\nGAIN\nMain output (SE or BAL input)12dB Balanced output, 6dB Single Ended output. Tape output: 0dB. (Processor input: 0dB Balanced)\u003cbr\u003e\n\nINPUT IMPEDANCE\n120K ohms Balanced, 60K ohms SE, Inputs (7): 1, 2, 3, 4, 5, 6, PROCESSOR. (XLR and RCA connectors).\u003cbr\u003e\n\nOUTPUT IMPEDANCE\n600 ohms Balanced, 300 ohms SE main (2), 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 tape (XLR and RCA connectors).\u003cbr\u003e\n\nOUTPUT POLARITY\nNon inverting.\u003cbr\u003e\n\nMAXIMUM INPUT\n20V RMS maximum Balanced, (10V RMS SE).\u003cbr\u003e\n\n\n\nRATED OUTPUTS\n2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz).\u003cbr\u003e\n\nCROSSTALK\n-80dB or better at 1kHz.\u003cbr\u003e\n\nCONTROLS\nVolume (104 steps). Push Buttons: Power, Mute, Interactive Touch Panel. Rear RS-232 control and IR input.\u003cbr\u003e\n\nPOWER SUPPLIES\nElectronically regulated low and high voltage supplies. Automatic 40 sec. warm-up\/brown-out mute. Line regulation better than .01%.\u003cbr\u003e\n\nNOISE\n1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.) \u003cbr\u003e\n\nTUBE COMPLEMENT\n(8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply.\u003cbr\u003e ","brand":"Audio Research","offers":[{"title":"Silver","offer_id":57409470366028,"sku":"ARESEARCHREF10S","price":28331.67,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57421014270284,"sku":"ARESEARCHREF10B","price":28331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Reference-10-Pre-amp-Silver.jpg?v=1777486665"},{"product_id":"audio-research-reference-75se-standard-amplifier","title":"Audio Research Reference 75SE Standard Amplifier","description":"VACUUM TUBE STEREO POWER AMPLIFIER, 75 WATTS\u003cbr\u003e\u003cbr\u003e \n\nThe Reference 75 SE is a stunning amplifier in every way – performance, styling and reliability combined to elevate your music listening to a new experience.  Capable of controlling a wide variety of speakers, the Reference 75 SE will transport you into the musical performance unlike any other comparable amplifier. At the heart of the Reference 75 SE is decades of proven Audio Research vacuum tube technology, a legacy unrivaled by any other manufacturer of tube electronics.  Developed through hundreds of hours of critical listening, the carefully selected components comprising the Reference 75 SE combine to provide an amplifier which transcends traditional hi-fi, instead relaying music with realism and tangibility.\u003cbr\u003e\u003cbr\u003e\n\n\n\n\nVisually, the Reference 75 SE hearkens back to past Audio Research products, taking inspiration from earlier amplifer designs.  With its two large VU meters, which display power output as well as provide bias adjustments, the Reference 75 SE has a timeless appearance resembling precision laboratory equipment and an overbuilt, industrious aesthetic.  Offered in both natural aluminum and black finishes, the understated look will complement any system.\u003cbr\u003e\u003cbr\u003e\n\nThe KT150 vacuum tube delivers power from the amplifier to your speakers.  Newly designed solely for the audio industry, the KT150 offers higher power handling and current delivery.  A matched pair of tubes per channel run conservatively, ensuring stable operation and many hours of trouble-free listening.  Custom designed capacitors couple the output of the tubes to the speakers for the purest signal possible.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference 75 SE is the new generation from a lineage of amplifiers only Audio Research could produce.  Experience real music and unleash the capacity of your system – music in High Definition®.\u003cbr\u003e\u003cbr\u003e\n\nSpecification:- \u003cbr\u003e\u003cbr\u003e\n\nPOWER OUTPUT\n75 watts per channel continuous from20Hz to 20kHz. 1kHz total harmonic distortion typically 0.6% at 75 watts, below 0.05% at 1 watt. Approximate actual power available at ‘clipping’ 76 watts (1kHz). (Note that actual power output is dependent upon both line voltage and ‘condition’ i. e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)\u003cbr\u003e\n\nPOWER BANDWIDTH\n(-3dB points) 7Hz to 60kHz.\u003cbr\u003e\n\nFREQUENCY RESPONSE\n(-3dB points at 1 watt) 0.7Hz to 75 kHz.\u003cbr\u003e\n\nINPUT SENSITIVITY\n1.4V RMS BAL for rated output. (25 dB Bal gain into 8 ohms.)\u003cbr\u003e\n\nINPUT IMPEDANCE\n300K ohms Balanced.\u003cbr\u003e\n\nOUTPUT POLARITY\nNon-inverting. Balanced input pin 2+ (IEC-268).\u003cbr\u003e\n\nOUTPUT TAPS\n8 ohms, 4 ohms.\u003cbr\u003e\n\nOUTPUT REGULATION\nApproximately 1.0dB 8 ohm load to open circuit (Damping factor approximately 8).\u003cbr\u003e\n\n\n\nOVERALL NEGATIVE FEEDBACK\n15dB.\u003cbr\u003e\n\nSLEW RATE\n10 volts\/microsecond.\u003cbr\u003e\n\nRISE TIME\n4.0 microseconds.\u003cbr\u003e\n\nHUM \u0026amp; NOISE\nLess than 0.06mV RMS – 112dB below rated output (IHF weighted, input shorted).\u003cbr\u003e\n\nPOWER SUPPLY ENERGY STORAGE\nApproximately 520 joules.\u003cbr\u003e\n\nPOWER REQUIREMENTS\n105-125VAC 60Hz (210-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle.\u003cbr\u003e\n\nTUBES REQUIRED\n2 – Matched pair KT150 – Power Output; 2 – 6H30 Driver.\u003cbr\u003e\n\nDIMENSIONS\n19\" (48.3 cm) W x 8.75\" (22.2 cm) H x 19.5\" (49.5 cm) D. Handles extend 1.5\" (3.8 cm) forward.\u003cbr\u003e\n\nWEIGHT\n47 lbs. (21.3 kg) Net; 63 lbs. (28.6 kg) Shipping. ","brand":"Audio Research","offers":[{"title":"Audio Research Reference 75SE Vacuum Tube Stereo Power Amp -Black","offer_id":57409470398796,"sku":"ARESEARCHREF75SEB","price":9165.0,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference 75SE Vacuum Tube Stereo Power Amp - Silver","offer_id":57421017186636,"sku":"ARESEARCHREF75SES","price":9165.0,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference 75SE 2nd User - Silver","offer_id":57421017219404,"sku":"ARREF75SESH","price":8331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Ref75SE-black.jpg?v=1777486670"},{"product_id":"audio-research-reference-phono-10-pre-amplifier","title":"Audio Research Reference Phono 10 Pre Amplifier","description":"Audio Research was proud to introduce the first two-chassis phono preamplifier in their history, the Reference Phono 10. This model number was designated because it mirrors its line-stage counterpart, the Reference 10, providing an unsurpassed level of performance in its category. The front panel has a 7” diagonal touch screen mounted asymmetrically, and only two buttons for power and mute. The interactive touch screen allows the user to change inputs (and input names), equalization, loading, gain, muting, foreground and background colors of the display, display intensity, and tube hours. Control functions are duplicated on the supplied metal remote. The front and side panels are 3\/8” brushed and anodized aluminum, and the tops of both units are acrylic with a laser-cut perforation pattern (chosen for its sonic benefits).\u003cbr\u003e\u003cbr\u003e\n\nThe Audio Research Reference Phono 10 embodies everything we know about phono playback, and incorporates many of the insights gained in the development of the Reference Anniversary and Reference 10 line-stage preamplifiers. The Audio Research Reference Phono 10 is a true dual-mono design with totally separate signal paths for each channel, from the dual-mono power supply forward. There are separate high- and low-voltage transformers for each channel, and sufficient energy storage for a serious amplifier, fully twice the capacity of a Reference Phono 2, providing incredible dynamic headroom. There are twenty stages of electronic regulation, with separate vacuum-tube regulation for each channel. Dual umbilical cords connect between the power supply and the separate analog stage. The power cord inlet contains a 20A IEC connector. The dual-mono audio circuits are fully discrete, pure Class-A, with zero feedback. The low gain audio section uses eight 6H30 tubes, four per channel. Rather than using a step-up transformer, special high-gain, extremely low-noise FETs are used in the high- gain section. This approach is costlier than using a transformer, but it is well worth the dramatic performance increase. The design is fully balanced, with an input circuit that allows its RCA inputs to operate in a balanced configuration without requiring an inverter. There are two sets of inputs with the same flexibility as the Reference Phono 2SE, including switchable Low and High gain, seven loading options including 47k, 1000, 500, 200, 100, 50 ohms, plus Custom which can be factory-set according to your needs. In addition to standard RIAA equalization, the Reference Phono 10 also includes early Columbia and Decca equalization curves.From the first note on that treasured LP, its greatness is at once obvious and breathtaking—the Audio Research Reference Phono 10 is a sonic blockbuster that establishes the new standard in analog music playback. Emphatically. Great vinyl takes on an explosive, dynamic quality that is normally encountered only in a live performance, whether the crescendo of an orchestra, a roaring rock band, or the intricacies of a solo piano. When called for, the stage is vast, holographic, enveloping: Dimensionality is redefined, with an engaging, ‘reach out and touch it’ quality. The RP10 resolves so much detail without grain, delighting listeners with new information extracted from those familiar grooves. The musical experience is so much more involving and persuasive—you do not want it to end. \u003cbr\u003e\u003cbr\u003e\n\nSpecifications:- \u003cbr\u003e\n\n100pF. (10K ohms minimum and 2000pF maximum.)\u003cbr\u003e\n\nMaximum Input: 250mV RMS at 1kHz (680 mV RMS at10kHz).\u003cbr\u003e\n\nRated Outputs: 0.5V RMS 10Hz to 20kHz, 100K ohm load (output capability is 80V RMS BAL output at 1\/2% THD at1kHz, 40V SE.)\u003cbr\u003e\n\nPower Supplies: Electronically regulated low and high voltage supplies. Automatic 40 sec. warm-up\/brown-out mute. Line regulation better than .01%.\u003cbr\u003e\n\nNoise: 0.22uV equivalent input noise, IHF weighted, shorted(Low Gain) input (73 dB below 1mV 1kHz input). 0.055uV equivalent input noise (High Gain) (65dB below 0.1mV 1kHz input)\u003cbr\u003e\n\nTube Complement: (8)-6H30P dual triodes, plus (2 each) 6550C and 6H30P in power supply.\u003cbr\u003e\n\nPower Requirements: 100-135VAC 60Hz (200-270VAC 50\/60Hz) 235 watts maximum. Standby: 0.8 watts.\u003cbr\u003e\n\nDimensions: Width 19” (48 cm); Height 7” (17.8 cm) (standard rack panel)\n","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57409470923084,"sku":"ARESEARCHREFPHONO10","price":28331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Reference-Phono-10.jpg?v=1777486700"},{"product_id":"audio-research-reference-cd9se-cd-dac","title":"Audio Research Reference CD9SE - CD\/DAC","description":"Reference CD9 SE\u003cbr\u003e\u003cbr\u003e\n\nAudio Research introduced its first Reference series CD player in 2005 with the Reference CD7, then evolving into the Reference CD8. Both players received critical acclaim for their accuracy and naturalness. People still want to play their CDs, but they also want to add other digital sources such as computer audio and streaming to their music systems, so we created the Reference CD9SE CD Player\/DAC. It combines the best of both, a super high-resolution compact disc player with a super high-resolution digital-to-analog converter that is stunning in its musicality.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference CD9SE incorporates four digital inputs: USB 2.0HS, AES\/EBU, RCA, and Toslink. All inputs handle 24 bit \/ 192k resolution. The Reference CD9SE retains the Philips PRO2R transport, still the best dedicated CD mechanism that is simply unsurpassed for compact disc playback. Benefitting from what we have learned in the development of the Reference DAC, the REF CD9 utilizes quad 24-bit DACs running in mono mode, with dual master oscillators; one for 44.1\/88.2\/176.4 sample rates, the other for 48\/96\/192kHz sample rates. Sample rate conversion is selectable for all inputs, allowing playback in native resolution or via upsampling, including compact disc and all inputs, including USB. Additionally, there is a selectable digital filter, with either fast or slow rolloff.\u003cbr\u003e\u003cbr\u003e\n\nLike other Reference products, the analog section is vacuum-tube, with four 6H30 dual-triodes, and there is vacuum-tube power-supply regulation featuring a 6550WE with a 6H30. The front panel has the familiar, dimmable CD display on the left side. On the right side there are LEDs to indicate sampling rate, input selection, filter and power. In addition to the digital inputs, the back panel includes Digital Outputs (AES\/EBU and BNC), single-ended RCA and balanced XLR outputs, and a 15A IEC power connector.\u003cbr\u003e\u003cbr\u003e\n\nSonically, the Reference CD9SE is in a new class, combining the magical musicality of tubes with remarkable transparency and aliveness. The Reference CD9SE sounds fast, with great transient speed, improved dynamics from top to bottom, much greater resolution of inner detail, with a focus and purity that is captivating. Rhythm, pace and timing are better than ever, something you must hear to appreciate. It’s time to hear your music in High Definition®.\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\n\nFREQUENCY RESPONSE: +0-3dB, 3Hz to 96kHz at rated output. 0.15dB 20Hz to 20kHz. (Balanced, 200k ohms load) @ 192kHz sample rate.\u003cbr\u003e\n\nDISTORTION: THD+N Less than .003% at 2V RMS BAL output.\u003cbr\u003e\n\nSIGNAL-NOISE-RATIO: 110dB\u003cbr\u003e\n\nDYNAMIC RANGE (AES17): 110dB\u003cbr\u003e\n\nIMD (SMPTE): .002%\u003cbr\u003e\n\nRMS NOISE LEVEL: -95dBV (20-20kHz)\u003cbr\u003e\n\nGAIN: 14.0dB Balanced, 7.0dB SE.\u003cbr\u003e\n\nINPUT IMPEDANCE: Digital: 75 ohms RCA, 110 ohms AES\/EBU, OPT 660nm TOSLink fiber 44.1 to 96kHz.\u003cbr\u003e\n\nOUTPUT IMPEDANCE: 660 ohms Balanced, 330 ohms SE Main (2), 20K ohms minimum load and 2000pF maximum capacitance.\u003cbr\u003e\n\nOUTPUT POLARITY: Non-inverting.\u003cbr\u003e\n\nMAX. OUTPUT: At 0.0dB input, 5V RMS into 200K ohm balanced load.\u003cbr\u003e\n\nDIGITAL SAMPLE RATES: 24 bits @ 44.1kHz to 192kHz, SPDIF, AES\/EBU and USB 2.0 HS.\u003cbr\u003e\n\nUPSAMPLING: Select upsampling or Native mode; CD, RCA, AES\/EBU, TOS upsample to 176.4 or 192kHz. USB upsamples to 88.2 or 96kHz.\u003cbr\u003e\n\nMASTER OSCILLATOR: 22.579mHz ±20Hz for 44.1, 88.2 \u0026amp; 176.4kHz. 24.576mHz ±20Hz for 48, 96 \u0026amp; 192kHz.\u003cbr\u003e\n\nOUTPUTS DIGITAL: XLR Balanced AES\/EBU 110-ohms 4V P-P, BNC coax SPDIF 75-ohms 0.7V P-P.\u003cbr\u003e\n\nINTRINSIC JITTER: \u0026lt; 10ps\u003cbr\u003e\n\nCHANNEL SEPARATION: 107dB @ 1kHz.\u003cbr\u003e\n\nPUSH BUTTONS: Power, Previous, Stop, Pause, Play, Next, Input.\u003cbr\u003e\n\nSIGNAL FORMAT (DISC): Sample freq. 44.1kHz, Quantization bit; 16bit linear\/channel, Channel bit rate; 4.3218Mb\/sec, Channel modulation code; EFM (8-14 modulation), ERROR CORRECTION; CIRC. Drive Mechanism (Top Load) Wow \u0026amp; Flutter; Un-measureable (Quartz stability); Discs; Accepts 5″ (12cm) and 3″ (8cm) sizes.\u003cbr\u003e\n\nOPTICAL PICKUP: Type; 3-beam LDGU (Laser Diode \u0026amp; Grating Unit), with holographic diffraction light pen, Laser; GaAlAs semiconductor, 780nm, 0.5mW max. output, Servo; Digitally-controlled low inertia linear positioning actuator.\u003cbr\u003e\n\nJITTER REDUCTION: High-stability crystal-controlled re-clocking for all outputs.\u003cbr\u003e\n\nDISPLAY: Six-digit vacuum fluorescent with optical filter; LED display; CD, AES, USB, RCA, TOS, Fast, Slow, Upsample, Power, 44.1, 48, 88.2, 96, 176.4, 192kHz.\u003cbr\u003e\n\nTUBE COMPLEMENT: (4) 6H30 dual triodes, plus (1) 6550WE \u0026amp; 6H30 in power supply.\u003cbr\u003e\n\nREMOTE BUTTONS: Repeat track\/disc, 0-9 digit entry keys, Scan ten seconds each track, Pause program, Stop program, Play, Shuffle tracks, Program enters selection on program list, Time elapsed, remaining track, remaining disc, A\/B repeat segment, Filter select, Input select, Pause, Play, Skip \u0026gt; , Skip \u0026lt; , FF, FR, Upsample\/Native mode, DSP-DN, DSP-UP.\u003cbr\u003e\n\nPOWER REQUIREMENTS: 105-125VAC 60Hz (210-250VAC 50\/60Hz) 120 watts maximum. Sleep mode 1 watts maximum.\u003cbr\u003e\n\nDIMENSIONS: Width 19″ (48 cm); Height 5.25″ (13.4 cm) (standard rack panel); Depth 15.375″ (39 cm)","brand":"Audio Research","offers":[{"title":"Audio Research Reference CD9SE CD\/DAC - Silver","offer_id":57409470955852,"sku":"ARESEARCHREFCD9SE-S","price":12498.33,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference CD9SE CD\/DAC - Black","offer_id":57421021970764,"sku":"ARESEARCHREFCD9SECDDAC-B","price":12498.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-CD9SE-Black-angle.jpg?v=1777486705"},{"product_id":"audio-research-reference-6-stereo-pre-amplifier","title":"Audio Research Reference 6 Stereo Pre Amplifier","description":"Almost since the inception of the brand, Audio Research has produced some of the finest components for music reproduction; this is especially true with regard to preamplifiers. In 1973, the SP3 was hailed as the best preamplifier available, and this tradition of excellence has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ultimate representation of performance, musicality and power. The Reference 6 is the latest chapter of our story. \u003cbr\u003e\u003cbr\u003e\n\nThe Reference 6 is not simply a market-driven product, but rather, a solution to a need which arose after the creation of the Reference SE Series amplifiers. According to Warren Gehl, who is responsible for sonic development of all Audio Research products, the new series of Reference amplifiers offer a level of musical and dynamic capability only made apparent when using the flagship, two-chassis Reference 10 preamplifier. Both preamplifiers of the Reference Series need the ability to provide the full benefit of this new sonic landscape. Increasing the tube count to six in the analog section, and advancements in the power supply improved both macro- and microdynamics and lowered distortion.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference 6 also offers better bass control, relaxed purity and more dimensionality. Further improvements include a more grainless presentation, greater transparency, better speed, and more continuity across the musical spectrum. Quite simply, the Reference 6 improves upon its predecessor in every way for a more palpable and immediate musical performance. Numerous elements – transformers, capacitors, wiring – are designs exclusive to Audio Research and the Reference 6. \u003cbr\u003e\u003cbr\u003e\n\nA completely new chassis has allowed not only a more beautiful aesthetic, but also provides more structural rigidity to assist in the dissipation of electrical and mechanical interferences. Six premium 6H30 tubes are now used in the audio circuit (increased from four tubes in the Reference 5SE) to provide an even quieter background and increased dynamic range. The tube-regulated power supply is also a new design for improved sonics. New circuit boards, circuit designs, and larger power transformer have been implemented to provide robustness and serviceability. \u003cbr\u003e\u003cbr\u003e\n\nA new volume control with finer step gradation and higher performance completes the system.","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57412556194124,"sku":"AUDIORESEARCHREF6demo","price":12498.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Ref-6-preamp.jpg?v=1777535498"},{"product_id":"audio-research-reference-phono-3","title":"Audio Research Reference Phono 3","description":"REFERENCE PHONO 3 \u003cbr\u003e\u003cbr\u003e\n\nVACUUM TUBE PHONO PREAMPLIFIER \u003cbr\u003e\u003cbr\u003e\n\nWhen Audio Research was founded in 1970, analog vinyl playback was the de facto music source of the time. Audio Research has either incorporated or built stand-alone phono stages since the very beginning, and has continuously provided phono preamplification, even during the height of digital music. The Reference Phono 3 is the next advancement of analog playback.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference Phono 3 is a continuation of the work which has been evolving other components in the Audio Research Reference Series over the past year. In mid-2015, all of the amplifiers received significant performance enhancements with the SE updates - new output tubes, components, and other parts ushered in a new level of sonic accuracy and musicality. This exposed a need for higher resolution and dynamic capabilities in components upstream from the amplifiers, and in October 2015 the Reference 6 was introduced. The Reference Phono 3 is the next step in our pursuit of musical realism.\nLike the Reference 6, the tube count in the analog section Reference Phono 3 has been increased from four to six. The power supply has been redesigned to accomodate the additional tubes, as well as provide a greater dynamic range. Numerous other components and parts, including proprietary coupling capacitors, wiring and cryogenically-treated pieces advance the playback experience to a level reminiscent of master tape playback for a realism and palpability previously unavailable.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference Phono 3 phono preamplifier is housed in a single chassis paneled in custom-machined aluminum. The vacuum tube audio stage utilizes six 6H30 vacuum tubes (three per channel), and one 6H30 and a 6550WE provide regulation in the power supply. The large, vacuum fluorescent display on the front panel shows all functions relative to the selected input. A row of six buttons control power, mute, input, and menu controls. Menu functions include: auto shutdown, gain and load settings, display brightness, equalization settings, and tube hour reset. High and low gain settings, as well as six fixed and one custom impedance setting, accomodate most any moving magnet or moving coil cartridge. Two single-ended inputs provide connectivity to two turntables. There are two main outputs providing both balanced and single-ended outputs. RS-232 and IR input allow for additional control options. The Reference Phono 3 ships with a full-function metal remote.\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\n\nFrequency Response: \n±.2 dB of RIAA, 10 Hz to 60kHz; 3 dB points below 0.3Hz and above 300 kHz.\u003cbr\u003e\n\nDistortion:  \nLess than .002% at 1.0V RMS 1kHz output.\u003cbr\u003e\n\nGain: \nSelectable 51 dB (Low) and 73 dB (High) at 1kHz BAL; 45 dB (Low) and 67 dB (High) at 1kHz SE. (MC and MM compatible).\u003cbr\u003e\n\nInput Impedance:  \n47k Ohms and 100 pF SE. Selectable loads: 1000, 500, 200, 100, 50 Ohms, and Custom.\u003cbr\u003e\n\nOutput Impedance:  \n400 ohms Balanced, 200 ohms SE. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms minimum and 2000 pF maximum).\u003cbr\u003e\n\nOutput Polarity:  \nNon-inverting.\u003cbr\u003e\n\nPhono Equalization: \n(selectable) RIAA, Columbia, and Decca.\u003cbr\u003e\n\nMaximum Input:  \n250 mV RMS at 1kHz (680 mV RMS at 10kHz) - Low Gain.\u003cbr\u003e\n\nRated Outputs:  \n2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 30V RMS at less than 0.5% THD at 1kHz).\u003cbr\u003e\n\n\n\n Controls:  \n6 Push Buttons:  Power, Menu, Option, Enter, Input, Mute.\u003cbr\u003e\n\nPower Supplies:  \nElectronically regulated low and high voltage supplies.  Automatic 2 minute warm-up\/brown-out mute.  Line regulation better than .01%.\u003cbr\u003e\n\nNoise:  \n0.28 µV equivalent input noise, IHF weighted. Shorted (Low Gain) input (71 dB below 1mV 1kHz input). 0.082 µV equivalent input noise (High Gain). (62 dB below 0.1 mV 1kHz input).\u003cbr\u003e\n\nTube Complement:  \n(6)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.\u003cbr\u003e\n\nPower Requirements:  \n100-135VAC 60Hz (200-270VAC 50\/60Hz) 130 watts.  Standby: 2 watts.\u003cbr\u003e\n\nDimensions:  \nWidth 19” (48 cm) \nHeight 7.8” (19.8 cm) \nDepth 16.5” (41.9 cm)\nHandles extend 1.6” (4 cm) forward of the front panel.\u003cbr\u003e\n\nWeight:  \n36.5 lbs. (16.6 kg) Net; 53 lbs. (24 kg) Shipping.\n\n\n\n","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57412840325452,"sku":"AUDIORESREFPHONO3","price":12498.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Ref-Phono-3.jpg?v=1777537202"},{"product_id":"audio-research-foundation-dac9","title":"Audio Research Foundation DAC9","description":"Foundation DAC 9 \u003cbr\u003e\u003cbr\u003e\n\nThe DAC9 digital-to-analog converter decodes most current formats with state-of-the-art vacuum tube technology. Five digital connections - USB, RCA, BNC, AES\/EBU, and Toslink - provide connectivity to all of your digital sources. Quad DAC architecture provides a balanced digital signal, wide dynamic range, and decoding resolutions from red book CD up to 384 kHz and native DSD sampling rates. A pair of 6H30 vacuum tubes are the heart of the analog circuit. Both balanced and single-ended connectors are provided for output connectivity. Native-rate upsampling and selectable digital filters allow customization of the digital signal. \u003cbr\u003e\u003cbr\u003e\n\nAudio Research is pleased to introduce the Foundation Series. From the same engineering and design team responsible for the award-winning Reference Series, the Foundation family of vacuum tube components has been created to provide incredible musical experiences. Spatial definition, dynamics and detail abound while providing the most natural musical experience.\u003cbr\u003e\u003cbr\u003e\n\nThe first three components include the LS28 line stage preamplifier, the PH9 phono stage, and the DAC9 digital-to-analog converter. A new amplifier will follow, with other products to complete the series. All models will be available in both black and natural anodized aluminum finishes. Each unit comes with its own custom metal remote control.\u003cbr\u003e\u003cbr\u003e\n\nSince 1970, High Definition has been more than our trademark; it has been our guiding principle for all products. The Foundation Series continues this passion and philosophy, offering the listener stunning playback, great value, and unparalleled long-term support. \u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:-\u003cbr\u003e\u003cbr\u003e\nFREQUENCY RESPONSE\n+\/-0.15dB  20Hz – 20kHz; +\/-3.0dB 6Hz – 192kHz.\u003cbr\u003e\n\nTHD+NOISE\nLess than .002% at  2V RMS 1kHz Balanced output.\u003cbr\u003e\n\nSIGNAL TO NOISE\n\u0026gt; 114dB.\u003cbr\u003e\n\nIMD +  NOISE\n.001% (SMPTE ratio)\u003cbr\u003e\n\nCHANNEL SEPARATION\n107dB.\u003cbr\u003e\n\nINTRINSIC JITTER\n \u0026lt; 10pS.\u003cbr\u003e\n\nDAC RESOLUTION\n24 bits.\u003cbr\u003e\n\nPUSH BUTTONS\nPower, Menu, Option, Enter, Input, Mute.\u003cbr\u003e\n\nOUTPUT IMPEDANCE\n500 Ohms balanced, 250 Ohms SE.\u003cbr\u003e\n\nDIGITAL FILTER\nSelectable Fast or Slow algorithms.\u003cbr\u003e\n\nUPSAMPLING\nAll Inputs upsample to 384kHz.\u003cbr\u003e\n\nINPUTS\nUSB2.0HS  44.1 to 384kHz, DSD, 2xDSD; RCA, BNC, XLR 44.1 to 192kHz; TOS 44.1 to 96kHz.\u003cbr\u003e\n\nRATED OUTPUTS\n3.8V RMS Max Balanced; 1.9V max SE  (0dB input).\u003cbr\u003e\n\nPOWER SUPPLIES\nElectronically-regulated low and high voltage supplies. Line regulation better than .01%.\u003cbr\u003e\n\nNOISE\n-103dB\u003cbr\u003e\n\nTUBE COMPLEMENT\n(2) 6H30 dual triodes.\u003cbr\u003e\n\nPOWER REQUIREMENTS\n100-125VAC 60Hz (200 - 250VAC 50\/60Hz) 60 watts maximum. \u003cbr\u003e\n\nSTAND BY\nLess than 2 watt.","brand":"Audio Research","offers":[{"title":"Silver","offer_id":57413199888716,"sku":"AUDIORESEARCHFOUNDATIONDAC9-S","price":7406.67,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57422888960332,"sku":"AUDIORESEARCHFOUNDDAC9-B","price":7406.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Foundation-DAC9.jpg?v=1777539831"},{"product_id":"audio-research-sp-11-pre-amplifier","title":"Audio Research SP-11 Pre Amplifier - 2nd user","description":"\u003cp\u003eOne of the very finest sounding preampliers with built in phono stage ever made.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SP-11 MkII was the undisputed number one preamplifier in the world at the time. Rarely has a single piece of equipment been so dominant in its heyday. A two-chassis design using six 6DJ8 tubes, it had every feature an audiophile could possibly want and was stunning in its industrial design. It’s become a true audiophile classic. You’ll can read much more about it in Ken Kessler’s book,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003e\u003ca href=\"https:\/\/www.stoneaudio.co.uk\/products\/audio-research-50th-anniversary-book\" target=\"_blank\" rel=\"noopener\"\u003eAudio Research: Making the Music Glow.\u003c\/a\u003e \u003c\/em\u003e\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57413541757260,"sku":"ARCSP11","price":3329.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-SP11-preamplifier.jpg?v=1777544482"},{"product_id":"audio-research-foundation-vt80-se-power-amplifier","title":"Audio Research Foundation VT80-SE Power Amplifier","description":"Introducing the VT80SE, the Audio Research amplifier with the widest appeal to the greatest number of music lovers worldwide. By combining world-class performance with flexibility and features like auto-bias, the VT80 has been an amp that is easy to take home and just forget as you enjoy your music collection again for the first time.  \u003cbr\u003e \u003cbr\u003e \n\nThe big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.  \u003cbr\u003e \u003cbr\u003e  \n\nIt is important to mention that the KT150 tubes supplied by Audio Research for all of our products are specially produced to our high standards, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.   \u003cbr\u003e \u003cbr\u003e \n\nWith its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way. \u003cbr\u003e \u003cbr\u003e   \n\nAside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.\u003cbr\u003e \u003cbr\u003e  \n\nTechnical Specifications:-\u003cbr\u003e \u003cbr\u003e \n\n\nPOWER OUTPUT \u003cbr\u003e  \n75 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 75 watts, below 0.05% at 1 watt. (Note that actual power output is dependent upon both line voltage and ‘condition’ i. e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)\u003cbr\u003e \u003cbr\u003e \n\nPOWER BANDWIDTH\u003cbr\u003e \n(-3dB points) 7Hz to 60kHz.\u003cbr\u003e \u003cbr\u003e \n\nFREQUENCY RESPONSE\u003cbr\u003e \n(-3dB points at 1 watt) 0.7Hz to 80kHz.\u003cbr\u003e \u003cbr\u003e \n\nINPUT SENSITIVITY\u003cbr\u003e \n1.4V RMS BAL for rated output. (25dB Bal gain into 8 ohms.)\u003cbr\u003e \u003cbr\u003e \n\nINPUT IMPEDANCE\u003cbr\u003e \n300K ohms Balanced (150K ohms SE)\u003cbr\u003e \u003cbr\u003e \n\nOUTPUT POLARITY\u003cbr\u003e \nNon-inverting. Balanced input pin 2+ (IEC-268)\u003cbr\u003e \u003cbr\u003e \n\nOUTPUT TAPS\u003cbr\u003e \n8 ohms, 4 ohms\u003cbr\u003e \u003cbr\u003e \n\nOUTPUT REGULATION\u003cbr\u003e  \nApproximately 1.0dB 8 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 8)\u003cbr\u003e \u003cbr\u003e \n\nOVERALL NEGATIVE FEEDBACK\u003cbr\u003e \n15dB\u003cbr\u003e \u003cbr\u003e \n\nSLEW RATE\u003cbr\u003e \n10 volts\/microsecond\u003cbr\u003e \u003cbr\u003e \n\nRISE TIME\u003cbr\u003e \n4.0 microseconds \u003cbr\u003e \u003cbr\u003e \n\nCHANNEL SEPARATION\u003cbr\u003e \n112dB\u003cbr\u003e \u003cbr\u003e \n\nHUM \u0026amp; NOISE\u003cbr\u003e \n–84dBV weighted, 8 ohms tap\u003cbr\u003e \u003cbr\u003e \n\nSIGNAL TO NOISE\u003cbr\u003e \n112dB\u003cbr\u003e \u003cbr\u003e \n\nCONTROLS\u003cbr\u003e \nPower on\/off, auto shut-off on\/defeat, Input BAL\/SE, RS232, 12V trigger\u003cbr\u003e \u003cbr\u003e \n\nAMBIENT AIR TEMPERATURE\u003cbr\u003e \n30° C (86° F) maximum ambient air temperature\u003cbr\u003e v\n\nPOWER SUPPLY ENERGY STORAGE\u003cbr\u003e \nApproximately 350 joules\u003cbr\u003e \u003cbr\u003e \n\nPOWER REQUIREMENTS\u003cbr\u003e \n100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle. Sleep power \u0026lt; 1 watt\u003cbr\u003e \u003cbr\u003e \n\nTUBES REQUIRED\u003cbr\u003e \n2 – Matched pair KT120 – Power Output; 2 – 6H30 Driver\u003cbr\u003e \u003cbr\u003e \n\nDIMENSION\u003cbr\u003e \nwidth    19” (48.3 cm)\u003cbr\u003e \nheight    10.33” (26.2 cm)\u003cbr\u003e \ndepth    18.45” (46.8 cm) to chassis , 19.40” (49.3 cm) to terminals\u003cbr\u003e \u003cbr\u003e \n\nWEIGHT\u003cbr\u003e \n45.7lbs. (20.7 kg) Net; 60.5 lbs. (27.4 kg) \n\n\n\n","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57414138659148,"sku":"AUDIORESEARCHVT80SE","price":8331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-VT80-SE.jpg?v=1777547761"},{"product_id":"audio-research-reference-160m-ref160m-power-amplifier","title":"Audio Research Reference 160M (REF160M) Power Amplifier","description":"Reference 160M - NOW ON DEMONSTRATION\u003cbr\u003e\u003cbr\u003e\n\nVacuum tube Monaural power amplifier\u003cbr\u003e\u003cbr\u003e \n\nAfter two years in development, the new Reference 160M (REF160M) Monoblock Power Amplifier is built like no other, looks like no other, and sounds like no other amplifier that you have ever heard, but it is unmistakably Audio Research. It features a refined audio topology with fewer and better components in the signal-path than in previous designs, switchable Ultralinear\/Triode operation, proprietary auto-bias, output tube monitoring and protection, an advanced power meter, and much more. This array of features has never been offered before in an Audio Research amplifier. \u003cbr\u003e\u003cbr\u003e\n\nThe designers at Audio Research wanted to create a new style that would complement the look of the REF6 preamp while also featuring a transparent faceplate that allows a view of the glowing KT150 vacuum tubes. While this window allows you to see the output tubes, it also incorporates an innovative dual-layer construction with distinctively etched markings that create an integrated power meter. The power meter’s output-level markings illuminate via hidden LEDs, and the illumination brightness is adjustable.  \u003cbr\u003e\u003cbr\u003e\n\nThe REF160M includes a sculpted cover with an integrated fan to cool the heat generated by the four (4) KT150 output tubes and two (2) 6H30 driver tubes. Solid-state power regulation was chosen to provide increased efficiency, stability, and reliability. The power supply stage uses a newly developed High Energy Capacity Transformer and a hefty bulk storage-capacity network to provide extremely high current on demand for transient peaks and intense dynamics, as well as for prodigious bass depth and authority. \u003cbr\u003e\u003cbr\u003e \n\nIt is understood that the best path is the shortest path. Audio Research engineers created a new audio circuit topology with the shortest signal path and the fewest components. Those components are not only the best available, many are custom made for Audio Research. Incorporating these quality components is a special 4-layer circuit board that lowers the noise floor to unprecedented levels, and a design which was previously reserved for use in our preamplifiers. The result is a new benchmark in musicality in every criterion of sound quality. \u003cbr\u003e\u003cbr\u003e \n\nThe REF160M also features a proprietary auto-bias circuit that works with various tubes types, including 6550, KT88, and KT120, in addition to the supplied KT150 and works constantly to maintain precise bias of the output tubes, while also adjusting for tube wear. There is no need to check or adjust bias ever again.  \u003cbr\u003e\u003cbr\u003e\n\nThe new REF160M breaks new ground sonically, aesthetically and operationally, and will be available in Natural (Silver) or Black finishes. \u003cbr\u003e\u003cbr\u003e \n\nTECHNICAL SPECIFICATION:-\u003cbr\u003e\u003cbr\u003e \n\nPOWER OUTPUT\u003cbr\u003e\n140 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt. (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical).\u003cbr\u003e\u003cbr\u003e\n\nPOWER BANDWIDTH \u003cbr\u003e\n(-3dB Points) 5Hz to 70kHz.\u003cbr\u003e\u003cbr\u003e\n\nFREQUENCY RESPONSE\u003cbr\u003e\n(-3dB points at 1 watt) 0.5Hz to 110kHz.\u003cbr\u003e\u003cbr\u003e \n\nINPUT SENSITIVITY\u003cbr\u003e\n2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms). \u003cbr\u003e\u003cbr\u003e\n\nINPUT IMPEDANCE\u003cbr\u003e\n200 k ohms Balanced.\u003cbr\u003e\u003cbr\u003e \n\nOUTPUT POLARITY\u003cbr\u003e\nNon-inverting. Balanced input pin 2+ (IEC-268). \u003cbr\u003e\u003cbr\u003e\n\nOUTPUT TAPS\u003cbr\u003e\n16 ohms, 8 ohms, 4 ohms.\u003cbr\u003e\u003cbr\u003e \n\nOUTPUT REGULATION\u003cbr\u003e\nApproximately 0.6dB 16 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 14). \u003cbr\u003e\u003cbr\u003e\n\nOVERALL NEGATIVE FEEDBACK\u003cbr\u003e\n14dB SLEW RATE: 13 volts\/microsecond RISE TIME: 2.0 microseconds.\u003cbr\u003e\u003cbr\u003e \n\nPOWER REQUIREMENTS\u003cbr\u003e\n105-130VAC 60Hz (210-250VAC 50Hz) 400 watts at rated output, 700 watts maximum, 260 watts at “idle”, 1 watt off.\u003cbr\u003e\u003cbr\u003e\n\nTUBES REQUIRED\u003cbr\u003e\n2 matched pair KT150 (Power output V1-4); 2 6H30 (Gain stage V5 and V6).\u003cbr\u003e\u003cbr\u003e\n\nDIMENSIONS\u003cbr\u003e\nWidth 17.25” (43.8 cm) \u003cbr\u003e\nHeight 10” (25.4 cm) \u003cbr\u003e\nDepth 18.5” (47 cm)\u003cbr\u003e\nHandles Extended 19.25” (48.9 cm)\u003cbr\u003e\u003cbr\u003e\n\nWEIGHT\u003cbr\u003e\n56lbs (25.5 kg) Net\u003cbr\u003e\n73lbs (33.2 kg) Shipping ","brand":"Audio Research","offers":[{"title":"Audio Research Reference 160M (REF160M) Amplifier - Silver (pair)","offer_id":57414138790220,"sku":"AUDIORESEARCHREF160M-S","price":24996.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference 160M (REF160M) Amplifier - Black (pair)","offer_id":57423410528588,"sku":"AUDIORESEARCHREF160M-B","price":24996.67,"currency_code":"GBP","in_stock":false},{"title":"Audio Research Reference 160M Amplifier - Silver (each)","offer_id":57423410626892,"sku":"AUDIORESREF160M-SEACH","price":14998.33,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference 160M Amplifier - Black (each)","offer_id":57423412363596,"sku":"ARESEARCHREF160M-BEACH","price":14998.33,"currency_code":"GBP","in_stock":true},{"title":"Audio Research Reference 160M – 2nd user - Black (each)","offer_id":57423412855116,"sku":"ARCREF160MB2U","price":9998.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Ref160M.jpg?v=1777547765"},{"product_id":"audio-research-reference-160s-stereo-power-amplifier","title":"Audio Research Reference 160S Stereo Power Amplifier","description":"Reference 160S stereo power amplifier \u003cbr\u003e\u003cbr\u003e\n\nThe new product distills the astonishing resolution, dynamic impact, musical purity and finesse of the 160M into one beautiful and attainable chassis designed for the music lover in all of us.\u003cbr\u003e\u003cbr\u003e\n\nFollowing the example of the internationally-acclaimed 160M monaural power amplifier introduced in 2018, the Reference 160S (REF160S) is a vacuum-tube design with dual transparent power meters that float in front of the eight KT150 output power tubes.\u003cbr\u003e\u003cbr\u003e\n\nThe 160S continues the feature set introduced in the 160M, including a proprietary auto-bias circuit, switchable Triode or Ultra linear modes of operation, balanced and single-ended inputs, and an output tube monitoring mode. Additionally, the 160S offers a four-layer circuit board, allowing music to emanate from a jet-black background.\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\u003cbr\u003e\n\n·       Weight: 100 Lbs\u003cbr\u003e\n\n·       Depth: 21.5”\u003cbr\u003e\n\n·       Power Rating: 140 WPC\u003cbr\u003e\n\n·       2 Rear Handles (for increased mobility)\u003cbr\u003e \n\n·       Product will begin shipping in Q3 of 2019 ","brand":"Audio Research","offers":[{"title":"Black","offer_id":57414922174796,"sku":"ARREF160S-B","price":23333.33,"currency_code":"GBP","in_stock":true},{"title":"Silver","offer_id":57423806824780,"sku":"ARESEARCHREF160S-S","price":23333.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-Ref-160S.jpg?v=1777552125"},{"product_id":"audio-research-reference-6se-pre-amplifier","title":"Audio Research Reference 6SE Pre Amplifier","description":"Reference 6SE\u003cbr\u003e\u003cbr\u003e\n\nAudio Research has produced some of the finest components for music reproduction; this is especially true with regard to preamplifiers. In 1973, the SP3 was hailed by every major critic as the best preamplifier available, and this tradition of excellence has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ultimate representation of performance, musicality and dynamics. The Reference 6SE is the latest chapter in our story.\u003cbr\u003e\u003cbr\u003e\n\nWith a single gain stage, the 6SE is a fully-balanced, Class-A design with zero feedback. In addition to six long-life 6H30 tubes in the gain stage, the enormous and highly-regulated power supply has another 6H30 with a 6550 providing vacuum-tube regulation.\u003cbr\u003e\u003cbr\u003e\n\nThe Reference 6SE replaces the Reference 6 and offers the highest performance ever available in a single-chassis preamplifier. Benefitting from the development that went into the Reference 160-series amplifiers, and the latest Reference 750SEL, the 6SE incorporates a myriad of new parts that have been judiciously incorporated into its design. The final 6SE would not have been possible without these revolutionary amplifiers.\u003cbr\u003e\u003cbr\u003e\n\nRegardless of the recording, the improvement in sound is immediate and compelling. Effortless, dynamic, and dimensional. The speed and resolution merge with musical color and textures that are both accurate and captivating.\u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\u003cbr\u003e\n\nFREQUENCY RESPONSE\u003cbr\u003e\n+0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load).\u003cbr\u003e\u003cbr\u003e\n\nDISTORTION\u003cbr\u003e\nLess than .01% at 2V RMS BAL output.\u003cbr\u003e\u003cbr\u003e\n\nGAIN\u003cbr\u003e\nMain output: 12dB Balanced output, 6dB SE output.  Record out: 0dB (Processor input: 0dB BAL\noutput).\u003cbr\u003e\u003cbr\u003e\n\nINPUT IMPEDANCE\u003cbr\u003e\n120K ohms Balanced, 60K ohms SE.  Inputs: 4 balanced, 4 single-ended. Assignable processor passthrough.\u003cbr\u003e\u003cbr\u003e\n\nOUTPUT IMPEDANCE\u003cbr\u003e\n600 ohms Balanced, 300 ohms SE Main (2). 20K ohms minimum load and 2000pF maximum capacitance. Outputs (3): 2 main, 1 record out (XLR and RCA connectors).\u003cbr\u003e\u003cbr\u003e\n\nOUTPUT POLARITY\u003cbr\u003e\nNon-inverting.\u003cbr\u003e\u003cbr\u003e\n\nMAXIMUM INPUT\u003cbr\u003e\n18V RMS BAL, 9V RMS SE.\u003cbr\u003e\u003cbr\u003e\n\nRATED OUTPUTS\u003cbr\u003e\n2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 70V RMS at less than 0.5% THD at 1kHz).\u003cbr\u003e\u003cbr\u003e\n\nCROSSTALK\u003cbr\u003e\n-88dB or better at 1kHz and 10 kHz.\u003cbr\u003e\u003cbr\u003e\n\nCONTROLS\u003cbr\u003e\nRotary encoders: Volume (103 steps), Select Input.  Push Buttons:  Power, Menu, Enter, Mono, Invert, Mute.\u003cbr\u003e\u003cbr\u003e\n\nPOWER SUPPLIES\u003cbr\u003e\nElectronically regulated low and high voltage supplies.  Automatic 45 sec. warm-up\/brown-out mute.  Line regulation better than .01%.\u003cbr\u003e\u003cbr\u003e\n\nNOISE\u003cbr\u003e\n1.7uV RMS residual IHF weighted balanced equivalent input noise with volume at 1 (109dB below 2V RMS output.)\u003cbr\u003e\u003cbr\u003e\n\nTUBE COMPLEMENT\u003cbr\u003e\n(6)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply.\u003cbr\u003e\u003cbr\u003e\n\nPOWER REQUIREMENTS\u003cbr\u003e\n100-135VAC 60Hz (200-250VAC 50\/60Hz) 130 watts.  Standby: 2 watts.\u003cbr\u003e\u003cbr\u003e\n\nDIMENSIONS\u003cbr\u003e\nWidth: 19” (48 cm)\u003cbr\u003e\nHeight: 7.8” (19.8 cm)\u003cbr\u003e\nDepth: 16.5” (41.9 cm)\u003cbr\u003e\nHandles extend 1.6” (4 cm) forward of the front panel.\u003cbr\u003e\nWeight: 37.5 lbs. (17 kg) Net; 49 lbs. (22.3 kg) Shipping","brand":"Audio Research","offers":[{"title":"Silver","offer_id":57415380894028,"sku":"ARESEARCHREF6SE","price":18750.0,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57423937732940,"sku":"ARESEARCHREF6SEB","price":18750.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-REF-6SE-angle.jpg?v=1777556163"},{"product_id":"audio-research-reference-80s","title":"Audio Research Reference 80S","description":"The Reference 80S stereo amplifier continues Audio Research’s latest design effort in creating a vacuum-tube amplifier that not only redefines ultimate music reproduction, but does it in an incredibly beautiful package.\u003cbr\u003e\u003cbr\u003e\n\nThe 80S was created for the music lover who does not require the output power of its larger siblings, the Reference 160S stereo and 160M mono amplifiers. The 80S continues the design ethos, including dual GhostMeters that float in front of four KT150 output tubes. Extruded panels, a vital part of the all-aluminum chassis, provide rigidity and beauty.\u003cbr\u003e\u003cbr\u003e\n\nOutwardly, the 80S shares the same dimensions as the 160M. A single shallow whisper fan is built into the bottom plate. Flexibility is built-in, too, with XLR and SE inputs, 4-8-16 ohm output taps, 12V input and output triggers, RS232 input, tube hour meter, switchable fan speeds, and defeatable auto-off function.\u003cbr\u003e\u003cbr\u003e\n\nThe feature set is the same as the 160S, including a proprietary auto-bias circuit that adjusts for not only tube age, but for powerline voltage swings. There is fusing of the output tubes, single-ended and balanced inputs for flexibility, switchable Triode-Pentode operation to accommodate loudspeakers and personal preference, output tube monitoring, and inclusion of an hour meter so you know how many hours are on the tubes–like an odometer for your amp. This is a tube amplifier that does not require fiddling, it is meant to be enjoyed. The built-in 12V trigger turns the 80S on or off when connected to a modern preamp with a 12V trigger.\u003cbr\u003e\u003cbr\u003e \n\nLike every Reference amplifier before it, the 80S is a fully-balanced differential design because it provides the highest performance and lowest distortion. A four-layer circuit board is used to provide a separate ground plane, better circuit layout, and fewer noise-inducing point-to-point connections. Music is projected against a quiet, jet-black background—like looking at the stars out in the country, removed from light pollution. It is magical and enveloping.\u003cbr\u003e\u003cbr\u003e\n\nBuilt by hand, from the ground-up in our Maple Grove, Minnesota facility, this is created in service of the music, bringing it to life in every sense of the word. Listening through the 80S is a compelling experience, never a mental exercise. Set up appropriately, the 80S can fool you into feeling you are in the presence of the musical performance: The finest details are heard, with rich harmonics and full dynamic contrasts–from the smallest whisper to the largest crescendo–showcased with the ambience of the original acoustic space. Whatever your reference speakers may be, whether they are from Wilson, Magnepan, Vandersteen, Focal, Sonus faber, or whatever you like: the Reference 80S will elevate their performance to a new plateau.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\n\n\nPOWER OUTPUT\u003cbr\u003e\n70 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 140 watts (33 watts in Triode mode) per channel, below 0.04% at 1 watt (Note that actual power output is dependent upon both line voltage and “condition” i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)\u003cbr\u003e\u003cbr\u003e \n\nPOWER BANDWIDTH\u003cbr\u003e\n(-3dB points) 7Hz to 68kHz\u003cbr\u003e\u003cbr\u003e \n\nFREQUENCY RESPONSE\u003cbr\u003e\n(-3dB points at 1 watt) 0.7Hz to 94kHz\u003cbr\u003e\u003cbr\u003e\n\nINPUT SENSITIVITY\u003cbr\u003e\n1.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms); \u003cbr\u003e\n0.7V RMS SE for rated output. \u003cbr\u003e\u003cbr\u003e\n\nINPUT IMPEDANCE\u003cbr\u003e\n300K ohms Balanced, 75K ohms Single Ended \u003cbr\u003e\u003cbr\u003e\n\nOUTPUT POLARITY\u003cbr\u003e\nNon-inverting. Balanced input pin 2+ (IEC-268) \u003cbr\u003e\u003cbr\u003e\n\nOUTPUT TAPS\u003cbr\u003e\n16 ohms, 8 ohms, 4 ohms \u003cbr\u003e\u003cbr\u003e\n\nOUTPUT REGULATION\u003cbr\u003e\nApproximately 1.0dB 16 Ohm Load to Open Circuit\u003cbr\u003e\n(Damping factor approximately 8) \u003cbr\u003e\u003cbr\u003e\n\nOVERALL NEGATIVE FEEDBACK\u003cbr\u003e\n15dB \u003cbr\u003e\u003cbr\u003e\nSLEW RATE\u003cbr\u003e\n10 volts\/microsecond\u003cbr\u003e\u003cbr\u003e \n\nRISE TIME\u003cbr\u003e\n4.0 microseconds\u003cbr\u003e\u003cbr\u003e \n\nPOWER REQUIREMENTS\u003cbr\u003e\n105-130VAC 60Hz (210-250VAC 50Hz) 420 watts at rated output,\u003cbr\u003e \n\n280 watts in Triode mode, 221 watts at “idle”, 3.6 watts off Units for Japan: 100VAC 50\/60Hz\u003cbr\u003e\u003cbr\u003e \n\nTUBES REQUIRED\u003cbr\u003e\n2 matched pair KT150 (Power output V1-V4); 2 6H30 (Gain stage V5, V6)\u003cbr\u003e\u003cbr\u003e\n\nDIMENSIONS\u003cbr\u003e \nWidth 18.5” (47 cm) chassis; 19.0” (48.26 cm) faceplate.\u003cbr\u003e\nHeight 10.5” (26 cm) \u003cbr\u003e\nDepth 18.5” (47 cm) \u003cbr\u003e\nWith handles \u0026amp; connectors: 21” (53.3 cm) \u003cbr\u003e\u003cbr\u003e\n\nWEIGHT\u003cbr\u003e\n62 lbs. (28.2 kg) Net; 73 lbs. (32.7 kg) Shipping.","brand":"Audio Research","offers":[{"title":"Natural Silver","offer_id":57415583334732,"sku":"ARCREF80SS","price":12498.33,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":57423954477388,"sku":"ARCREF80SB","price":12498.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-REF-80S.jpg?v=1777556630"},{"product_id":"audio-research-i-50-integrated-amplifier","title":"Audio Research I\/50 Integrated Amplifier","description":"The I\/50 Integrated Amplifier is the first product in an all-new series from Audio Research. Functionally \nsimple, visually engaging, and musically sublime - the I\/50 takes music listening to a whole new \nexperience. Hand-crafted in Minnesota, the I\/50 is built with the same attention to detail as all other \nAudio Research products - each one even gets its own listening test with sonic designer, Warren Gehl. \nAvailable in six colors, the I\/50 features Cerakote finishes for a beautiful and long-lasting look. The \nmodular design allows for the installation of two audio modules - a Phono Stage, and a D\/A Converter \n(to come in 2022). The high current, 50 watt per channel amplifier is capable of driving a wide variety \nof speakers. A headphone jack allows for personal listening time.\u003cbr\u003e\u003cbr\u003e\nThe I\/50 is designed to be easy to use, and has three controls on its top panel - Power, Input, and \nVolume. Two LexieTubes® provide display information for input selection and volume. Two matched \npairs of 6550WE vacuum tubes, along with three 6922 tubes, stand in front of the perforated \ntransformer cover. Three single-ended inputs and one XLR input provide connectivity for most systems, \nalong with 4- and 8- Ohm speaker taps to accommodate your speaker of choice. One input can be \nassigned for pass-through function. A full-function metal remote control provides further functionality \nand operation. An optional tube cage will be available.\u003cbr\u003e\u003cbr\u003e\nAs with all Audio Research products, the I\/50 is built entirely in our Minnesota facility by a team of \nskilled technicians and expert craftspeople. Offered in six colours, the I\/50 is the first product completely \nfinished in-house. The Audio Research finishing lab \nencompasses a purpose-built painting facility and \nlaser imaging and marking machines to produce \na luxurious finish normally found only on much \nmore expensive products. The Cerakote \nfinish is not only beautiful, but designed \nto be enduring and easy to \nmaintain. \u003cbr\u003e\u003cbr\u003e\nThe performance of the I\/50 belies its compact design. 50 watts of all-vacuum tube power energize \nyour speakers with beautiful and lifelike music. Designed by the Audio Research engineering team \nand fine-tuned by Warren Gehl, the I\/50 has been given the same level of care and attention as \nour Reference Series products. The ability of the I\/50 to reconstruct a musical experience will thrill \nand excite all who hear it. Thanks to the substantial power supply and high current design, the I\/50 \nprovides controlled and dynamic playback - even on challenging speakers. The Phono module \nprovides 42 dB of gain, allowing a wide choice of moving magnet and high-output moving coil \ncartridges. The D\/A Converter will have multiple connection options and an array of decoding formats \nto accommodate the wide spectrum of music formats and resolutions. The I\/50 is a truly integrated \nproduct while providing renowned Audio Research performance and sound quality.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\nPower Output: 50 watts continuous from 20Hz to 20kHz\u003cbr\u003e \nPower Bandwidth: (-3dB points) 10Hz to 22kHz \u003cbr\u003e\nFrequency Response: (-3dB points at 1 watt) 7Hz to 30kHz\u003cbr\u003e \nInput Sensitivity: 1.25V RMS for rated output. \u003cbr\u003e\nInput Impedance: 100K ohms Balanced, 48K ohms Single Ended\u003cbr\u003e \nOutput Polarity: Non-inverting. Balanced input pin 2+ (IEC-268)\u003cbr\u003e\nOutput Taps: 8 ohms, 4 ohms \u003cbr\u003e\nPower Requirements: 105-130VAC 60Hz (210-250VAC 50Hz) 252 watts at rated output.\u003cbr\u003e\nTubes Required: 2 matched pair 6550WE; 3-6922 (1 input, 2 driver).\u003cbr\u003e\u003cbr\u003e\nDimensions: \u003cbr\u003e\nWidth 16.5” (42 cm) \u003cbr\u003e\nHeight 7.25” (18 cm) \u003cbr\u003e\nDepth 13.5” (34 cm) \u003cbr\u003e\nWeight: 40 lbs (18.1 kg); 51 lbs (23.1kg) shipping weight.","brand":"Audio Research","offers":[{"title":"Audio Research I\/50 - Black with Black","offer_id":57415660044620,"sku":"ARCI\/50BLKBLK","price":4331.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research I\/50 - Black with White","offer_id":57423962767692,"sku":"ARCI\/50BLKWHT","price":4331.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research I\/50 - Black with Red","offer_id":57423962800460,"sku":"ARCI\/50BLKRED","price":4331.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research I\/50 - Black with Gold","offer_id":57423962833228,"sku":"ARCI\/50BLKGLD","price":4331.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research I\/50 - Black with Blue","offer_id":57423962865996,"sku":"ARCI\/50BLKBLU","price":4331.67,"currency_code":"GBP","in_stock":true},{"title":"Audio Research I\/50 - Silver with Silver","offer_id":57423962898764,"sku":"ARCI\/50SLVSLV","price":4331.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-I-50-black-white.jpg?v=1777556883"},{"product_id":"audio-research-50th-anniversary-book","title":"Audio Research 50th Anniversary Book","description":"\u003ch3\u003eAudio Research: Making the Music Glow - By Ken Kessler\u003c\/h3\u003e\nThis Luxurious new book commemorates the first 50 years of the American luminaries of valve-based audio.\u003cbr\u003e\u003cbr\u003e\nAudio\tResearch Corporation is\thonored\tto\tpartner\twith\tauthor\tKen\tKessler\tto\trelease a\t\nspecial\tbook\tcommemorating\tthe\tcompany’s\t50th anniversary.\tEntitled Audio\tResearch:\tMaking\tthe\tMusic\tGlow,\tthe\tbook\t\ndescribes\tthe people\tand\tprocesses\tresponsible\tfor\tthe\tdesign,\tmanufacturing, fine-tuning\tand\tmarketing\tof\taudio\tamplification\t\nand\tsource\tcomponents\tthat\thave\tbeen\tregarded\tperpetually\tas\tamong\tthe\tbest\tin\tthe\tindustry.\u003cbr\u003e\t\u003cbr\u003e\nCelebrating\tAudio\tResearch’s first\thalf-century,\tthe\tbook\ttells\tthe\tstory\tof\ta\tmanufacturer\tthat\thas\thelped\tto\tdefine\thigh-end\t\naudio,\tits sole\tpurpose\tto\televate the\tsound\tquality\tof\tmusic reproduction in\tthe\thome.\u003cbr\u003e\u003cbr\u003e\tWilliam\tZane\t“Bill”\tJohnson\testablished\t\nAudio\tResearch\tin\t1970,\tbasing\tits\tproducts\ton\twhat\twas\tthen\tconsidered\tby\tmany\tto\tbe\t‘obsolete’\ttechnology:\tvacuum\ttubes.\u003cbr\u003e\t\nGuided\tby\this\tpassion\tfor\tmusic\tand\tthe\timportance\tof\thigh-quality\tsound\tto\tthe\tlistener’s\texperience,\tcoupled\tto a\trefusal\tto\tfall\t\nvictim\tto\tthe\tfashion\tand\tdesign\ttrends\tof\tthe\ttime, Johnson\twas\trevolutionary\tin\tthe\tfield\tof\tsound\treproduction.\u003cbr\u003e\u003cbr\u003e\t\n“This\tisn’t\tjust\tany\tbook,”\tsaid\tAudio\tResearch\tCEO\tJeff\tPoggi. “This\tis\ta reference-quality\thistory\tof\tAudio\tResearch; authentic\t\nand\thonest\tin\tits\tstorytelling\tand ‘high-definition’\tin\tits\tart and\texecution.\tIt\tbrings Bill\tJohnson’s\tpassion,\tcreativity\tand\t\ndedication\tto\tlife,\tshowcasing\thow\this\tlegacy\tlives\ton\tin\tthe\tpeople\tand\tproducts\tthat continue\tto\tdefine\tAudio\tResearch\t\nCorporation.\tNow\tmore\tthan\tever,\tthis\tbook\tfeels\tso\tright\t– it\tendures,\tit\tis\ttimeless,\tit\tis\tthe\tperfect\treflection\tof\tan\tAudio\t\nResearch\tproduct in\tthat\tit\twill\tlast\ta\tlifetime.”\u003cbr\u003e\u003cbr\u003e\nWith\topen\taccess\tto\tthe\tcompany’s\tarchives,\tthe\tparticipation\tof\temployees,\tand\tthe\tsupport\tand\tinsights\tof\tBill’s\twife,\tNancy,\t\nAudio\tResearch:\tMaking\tthe\tMusic\tGlow is\tfilled\twith\trare\timages,\tcurated\treprints\tof\tperiod\tinterviews,\tthe\tdefinitive\tproduct\t\nlisting,\tand\ta\tstudy\tof the\tcompany’s\t25\tgreatest\tachievements,\taugmented\tby\tfresh\tphotography\tof\teach\tmodel.\u003cbr\u003e\tWithin\tits\t\nluxuriously produced\tpages\tare\tstories\tof\tthe\tcompany’s\troots,\tits\tdevelopment,\tits\tevolution,\tand\tits\ttenacious\thold\ton\t\ndelivering\tthe\tvery\thighest\tstandard\tof\tmusic\tplayback. For\tevery\tAudio\tResearch\towner\tand\thigh-end\taudio\taficionado,\tit\tis\ta\t\nbook\tto\ttreasure\tforever.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eAUDIO\tRESEARCH\t50TH ANNIVERSARY BOOK HIGHLIGHTS\u003c\/h3\u003e\n• 18\tchapters\u003cbr\u003e\n• 14\tinterviews\u003cbr\u003e\n• 25\tkey\tproduct\tprofiles\u003cbr\u003e\n• Definitive\tproduct\tlisting\u003cbr\u003e\n• Duration\tof\tcoverage:\t1970-2020.\t50\tyears\tof\thistory.\u003cbr\u003e\t\n• Pagination:\t220\tPages\u003cbr\u003e\n• Photos:\t220+\tin\tmono\tand\tfull\tcolour\u003cbr\u003e\n• Dimensions:\t305x305mm\u003cbr\u003e\t\n• Weight:\t1.8kg\u003cbr\u003e\n• First\tedition\trun:\t2000\tcopies","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57415660077388,"sku":"ARC50BOOK","price":125.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Audio-Research-50th-Anniversary-Book.jpg?v=1777556888"},{"product_id":"audio-research-cd3-cd-player-2nd-user","title":"Audio Research CD3 CD Player - 2nd User","description":"\u003cp\u003eThe CD3 is designed to do one thing superbly: that is, to play back normal \"redbook\" music CDs, CD-R and CD-RW discs with maximum fidelity and full musical expression. The CD3 will not play back DVD video, DVD audio or SACD-only discs because it is our firm belief that the convenience of multi-format playback sacrifices sonic performance in the CD format. And, most customers and music lovers have extensive CD-based collections that continue to grow, so the priority on playback quality in this format, in our view, is eminently justified. While using the latest 24\/192-capable Crystal DAC, the CD3 does not upsample, because our empirical research shows sonic compromise is unavoidable due to sample rate manipulation and approximating errors. The engineering focus of the CD3 is to maximize performance with the prevailing music format by keeping the overall player design simple, reliable and optimized for the one task it must accomplish.\u003c\/p\u003e\n\u003cp\u003eTo this end, all the components used in the CD3 have been carefully selected and in many cases refined for best performance. The laser mechanism is Philips' best cast-metal Pro 2 model, mounted to a massive machined base for maximum rigidity and lowest jitter. The top-loading, sliding access door is smooth and ergonomically elegant, allowing installation in equipment racks between shelves. The Crystal Semiconductor 24\/192 DAC was chosen for its resolution and musicality when matched with our fully differential, Class A J-FET analog output stage. Massive regulated power supplies -- using industry-leading capacitors for both bulk supplies and bypass components and damping techniques of a proprietary nature have been used to extend the CD3's remarkable range of performance characteristics.\u003c\/p\u003e\n\u003cp\u003ePrimary control functions of the CD3 are accessible by buttons on the front panel and by the handheld remote control, which also has additional capabilities. What was the drawer front on the CD2 is now the CD3 function buttons. The CD3 also has a Standby mode like the CD2, so it is kept ready for maximum sonic performance. Digital outputs include AES\/EBU (BAL) and SPIF coaxial (BNC), while analog outputs include both SE and BAL. The included power cord is a grounded three-pin 14-gauge cord with detachable IEC connector. Since the CD3 is a top-loading design, a proprietary, self-centering magnetic clamp is included.\u003c\/p\u003e\n\u003cp\u003eAnd perform it does, on any music you want to throw at it. The CD3 will impress you with its effortless, natural and liquid presentation. Dynamics are shocking when called for, yet nuanced and supple. Soundstage architecture and image focus are the best we have heard from a digital source. The purity, air and presence of the musical event are retrieved to a degree many didn't think possible within the CD format. The resolution of detail is carried well beyond the CD2\/DAC3MKII level, yet importantly the music retains its coherence and natural flow. This truly is the most natural and involving CD player we have ever experienced - and we believe your conclusion will be the same.\u003c\/p\u003e\n\u003cp\u003eWhile not inexpensive, the CD3 represents a remarkable value that will prove to be accessible to many, many music lovers. Again: our engineering investment has been concentrated on refining musical performance and mechanical integrity within the dominant recording format - a sensible approach in this era of so many competing technologies. There is yet untapped life in the redbook CD format, and the CD3 will help you discover it.\u003c\/p\u003e\n\u003cdiv class=\"section__content-wrapper\"\u003e\n\u003cdiv class=\"model-specifications-section__container\"\u003e\n\u003cdiv class=\"model-specifications-section__specifications-wrapper\"\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eAnalog outputs\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e1. Balanced XLR 5.4V RMS (+14.6dBv) max. 2. Single-Ended RCA 2.7V RMS (+8.6dBv) max.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eOutput impedance\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e(Analog) 400 ohms BAL, 200 ohms SE.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eFrequency response\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e0.5-20,000Hz +0 -.1dB\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eS\/N ratio\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e90dBA\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eDistortion\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e.025% 1kHz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eChannel separation\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e92dB 1kHz\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eResolution\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e24 BIT DELTA-SIGMA DAC\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eDigital outputs\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003e1. XLR Balanced AES\/EBU 110-ohm 4V P-P. 2. BNC coax SPDIF 75-ohm 0.7V P-P.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification\"\u003e\n\u003cdiv class=\"sub-label\"\u003eSignal format\u003c\/div\u003e\n\u003cdiv class=\"model-specifications-section__specification-value\"\u003eSampling frequency: 44.1kHz. Quantization Bit: 16bit linear per channel. Channel bit rate: 4.3218Mb\/sec. Channel modulation code: EFM (8-14 modulation). Error correction: CIRC (cross interleave Reed Solomon code).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Audio Research","offers":[{"title":"Default Title","offer_id":57776561815884,"sku":"ARCREFCD8","price":1041.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/ARC_CD3_top.jpg?v=1781252051"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/collections\/audioresearch_7d504761-acc6-4303-8a5d-4a47f933349a.gif?v=1777394215","url":"https:\/\/www.stoneaudio.co.uk\/collections\/audio-research.oembed","provider":"Stone Audio","version":"1.0","type":"link"}