{"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","url":"https:\/\/www.stoneaudio.co.uk\/products\/audio-research-foundation-ph9-hybrid-phono-pre-amplifier","provider":"Stone Audio","version":"1.0","type":"link"}