{"product_id":"parasound-halo-a23-plus-power-amplifier","title":"Parasound HALO A23 Plus Power Amplifier","description":"Parasound Halo A23+\u003cbr\u003e\u003cbr\u003e\n \n\nChanges from the original A 23→A 23+:-\u003cbr\u003e\u003cbr\u003e\n\n•125 → 160 Watts (8Ω)\u003cbr\u003e \n•225 → 240 Watts (4Ω)\u003cbr\u003e \n•400 → 500 Watts (bridged)\u003cbr\u003e \n•Filter cap: 40,000 uF →54,400 uF \u003cbr\u003e\n•Crosstalk (20kHz): 63dB → 70dB\u003cbr\u003e \n•Transformer size: 1.0 kVA → 1.1 kVA \u003cbr\u003e\n•Refined Halo cosmetic with aluminum end caps \u0026amp; gold highlights\u003cbr\u003e \n•Updated rear panel with heavy duty speaker terminals from HINT 6\u003cbr\u003e \n•Upgraded internal gold on gold audio connections \u003cbr\u003e\n•Updated auto turn on circuit \u003cbr\u003e\u003cbr\u003e\n\nAll Features:- \u003cbr\u003e\u003cbr\u003e\n\n•160 watts x 2 @ 8 Ω RMS, both channels driven\u003cbr\u003e \n•240 watts x 2 @ 4 Ω RMS, both channels driven\u003cbr\u003e \n•500 watts x 1 @ 8 Ω, in bridged mode\u003cbr\u003e \n•Circuitry designed by legendary John Curl \u003cbr\u003e\n•High bias Class A\/AB operation \u003cbr\u003e\n•45 amperes peak current per channel \u003cbr\u003e\n•Stable with speaker impedance dips below 2 Ω \u003cbr\u003e\n•Balanced inputs with discrete circuits\u003cbr\u003e \n•Heavy-duty 24k gold-plated 5-way speaker binding posts \u003cbr\u003e\n•Gold-plated RCA input \u0026amp; loop output jacks \u003cbr\u003e\n•Direct-coupled signal path, no capacitors or inductors\u003cbr\u003e \n•DC Servo and relay protection circuits\u003cbr\u003e \n•AC turn-on inrush surge protection with relay bypass \u003cbr\u003e\n•JFET input stage, MOSFET driver stage\u003cbr\u003e \n•12 beta-matched 15 ampere, 60 MHz bipolar output transistors\u003cbr\u003e \n•1.1 kVA shielded toroid transformer w\/ independent windings for each channel\u003cbr\u003e \n•Independent power supplies for input stage, driver stage and output stage\u003cbr\u003e \n•54,400 µF filter capacitors for output stages\u003cbr\u003e \n•Full power is rated all the way down to 5Hz for unrestricted low-end bass\u003cbr\u003e \n•Harris hyper-fast soft-recovery bridge diode rectifiers \u003cbr\u003e\n•Automatic turn-on by 12 V trigger or audio sensing\u003cbr\u003e \n•2 rack space chassis with rear carry handles \u003cbr\u003e\n•Rack mount hardware available separately \u003cbr\u003e\n•Available in silver or black \u003cbr\u003e\u003cbr\u003e\n\nTechnical Specifications:- \u003cbr\u003e\u003cbr\u003e\n\nPower Output – Stereo Mode (0.06% THD):\u003cbr\u003e\n160 watts x 2, 8 Ω both channels driven\u003cbr\u003e\n240 watts x 2, 4 Ω both channels driven \u003cbr\u003e\u003cbr\u003e\n\nPower Output – Stereo Mode (0.9% THD):\u003cbr\u003e\n210 watts x 2, 8 Ω both channels driven\u003cbr\u003e\n300 watts x 2, 4 Ω both channels driven \u003cbr\u003e\u003cbr\u003e\n\nPower Output – Bridged Mode (0.06% THD):\u003cbr\u003e\n500 watts x 1, 8 Ω\u003cbr\u003e\nBridged 4 Ω operation is not recommended \u003cbr\u003e\u003cbr\u003e\n\nPower Output – Bridged Mode (0.9% THD):\u003cbr\u003e\n600 watts x 1, 8 Ω\u003cbr\u003e\nBridged 4 Ω operation is not recommended\u003cbr\u003e\u003cbr\u003e \n\n*All Power measurement are at 120 VAC,\nRMS continuous power, full audio band (20 Hz - 20 kHz) \u003cbr\u003e\u003cbr\u003e\n\nCurrent Capacity:\n45 amps peak, per channel \u003cbr\u003e\n\nSlew Rate:\n \u0026gt; 130 volts per microsecond\u003cbr\u003e \u003cbr\u003e\n\nFrequency Response:\u003cbr\u003e\n5 Hz - 100 kHz, +0\/-3 dB\u003cbr\u003e\n20 Hz - 20 kHz, +0\/-0.25 dB \u003cbr\u003e\u003cbr\u003e\n\nTotal Harmonic Distortion (THD):\u003cbr\u003e\n \u0026lt; 0.06 % at full power\u003cbr\u003e\n \u0026lt; 0.03 % at typical listening levels \u003cbr\u003ev\n\nIM Distortion:\n \u0026lt; 0.04 % \u003cbr\u003e\n\nTIM:\nUnmeasurable \u003cbr\u003e\u003cbr\u003e\n\nInter-channel Crosstalk:\u003cbr\u003e\n \u0026gt; 85 dB at 1 kHz\u003cbr\u003e\n \u0026gt; 70 dB at 20 kHz\u003cbr\u003e\u003cbr\u003e\n\nInput Impedance:\u003cbr\u003e\nUnbalanced: 33 kΩ \u003cbr\u003e\nBalanced: 66 kΩ,(33 kΩ per leg) \u003cbr\u003e\u003cbr\u003e\n\nTotal Gain:\n29 dB \u003cbr\u003e\u003cbr\u003e\n\n Input Sensitivity for 28.28 V Out (8 Ω Load):\u003cbr\u003e\nUnbalanced: 1 V\u003cbr\u003e\nBalanced: 1 V per leg \u003cbr\u003ev\n\nS\/N Ratio:\u003cbr\u003e\n \u0026gt; 112 dB, input shorted, IHF A-weighted\u003cbr\u003e\n \u0026gt; 107 dB, input shorted, unweighted\u003cbr\u003e\u003cbr\u003e \n\nDamping Factor:\n \u0026gt; 800 at 20 Hz\u003cbr\u003e\n\nDC Trigger Requirements:\n+9 Vdc to +12 Vdc, 5 mA\u003cbr\u003e \n\nAudio Trigger Requirements:\n2 mV - 10 mV\u003cbr\u003e\u003cbr\u003e \n\nXLR Pin Identification:\u003cbr\u003e\n1 = Ground (Shield)\u003cbr\u003e\n2 = Positive\u003cbr\u003e\n3 = Negative (Return)\u003cbr\u003e\u003cbr\u003e \n\nDimensions:\u003cbr\u003e\nWidth: 17-1\/4\" (437 mm)\u003cbr\u003e\nDepth: 15\"-1\/4\" (388 mm)\u003cbr\u003e\nDepth, with cables 17\" (432 mm)\u003cbr\u003e\nHeight, with feet: 4-1\/8\" (105 mm)\u003cbr\u003e\nHeight, without feet: 3-1\/2\" (89 mm), 2U\u003cbr\u003e\u003cbr\u003e \n\nNet Weight:\n27 lb. (12.2 kg) \u003cbr\u003e\n\nShipping Weight:\n34 lb. (14.4 kg)\u003cbr\u003e\u003cbr\u003e \n\nPower Requirement:\u003cbr\u003e\nStandby: \u0026lt; 1 Watt \u003cbr\u003e\nIdle (no music playing): 75 Watts \u003cbr\u003e\nTypical Listening levels: 125 Watts\u003cbr\u003e\nMaximum: 800 Watts\u003cbr\u003e\n110-125 VAC 60 Hz or 220-250 VAC 50 Hz\u003cbr\u003e\nAC mains voltage is set on rear panel \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n","brand":"Parasound","offers":[{"title":"Parasound HALO A23+ Power Amplifier- Silver","offer_id":57407943409996,"sku":"PSHALOA23+SILVER","price":1416.63,"currency_code":"GBP","in_stock":true},{"title":"Parasound HALO A23+ Power Amplifier - Black","offer_id":57417014509900,"sku":"PSHALOA23+B","price":1416.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/6891\/2204\/files\/Parasound-Halo-A23-Plus.jpg?v=1777462646","url":"https:\/\/www.stoneaudio.co.uk\/products\/parasound-halo-a23-plus-power-amplifier","provider":"Stone Audio","version":"1.0","type":"link"}