{"product_id":"audio-research-ph9-phono-stage-preamplifier","title":"Audio Research PH9 Phono Stage Preamplifier","description":"\u003cp\u003eThe PH9 phono preamplifier delivers high-performance analog playback for a wide range of cartridges and turntables. Built around three 6H30 vacuum tubes, it features a simple, transparent signal path that combines tube warmth and musicality with excellent detail and neutrality. Five selectable impedance settings allow easy cartridge matching and can be adjusted remotely during playback. Additional features include tube hour tracking, auto shutdown and menu-based controls. Continuing Audio Research’s long-standing commitment to “High Definition” sound, the PH9 offers engaging, dynamic vinyl reproduction, strong value and dependable long-term support for serious music listeners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e ±.2 dB of RIAA, 5 Hz to 20kHz; 1 dB points below 0.3Hz and above 80 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistortion:\u003c\/strong\u003e Less than .015% at 3V RMS 1kHz output\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain: \u003c\/strong\u003e58 dB at 1 kHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e Selectable loads: 47k, 1000, 500, 200, 100 Ohms\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e 200 ohms. Recommended load 50k-100k Ohms and 100 pF. (10k Ohms minimum and 2000 pF maximum).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Polarity:\u003c\/strong\u003e Non-inverting\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Input: \u003c\/strong\u003e80 mV RMS at 1kHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRated Outputs:\u003c\/strong\u003e 0.5V RMS 10 Hz to 60 kHz, into 100K ohm load (maximum balanced output capability is 0.46V RMS at less than 0.5% THD at 1kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eControls:\u003c\/strong\u003e 6 Push Buttons:   Power, Menu, Option, Enter, Input, Mute\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supplies:\u003c\/strong\u003e Electronically regulated low and high voltage supplies.   Automatic 2 minute warm-up\/brown-out mute. Line regulation better than .01%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNoise:\u003c\/strong\u003e 77 dB, shorted inputs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube Complement:\u003c\/strong\u003e (3)-6H30P dual triodes, plus (1 each) 6550WE and 6H30P in power supply\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e 100-125VAC 60Hz (200-250VAC 50\/60Hz) 120 watts maximum. Standby: 2 watts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWidth: \u003c\/strong\u003e19” (48 cm)\u003cbr\u003e\u003cstrong\u003eHeight: \u003c\/strong\u003e6.5” (13.7 cm)\u003cbr\u003e\u003cstrong\u003eDepth: \u003c\/strong\u003e13.7” (34.8 cm)\u003cbr\u003e\u003cstrong\u003eHandles:\u003c\/strong\u003e extend 1.6” (4 cm) forward of the front panel\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 15.4 lbs. (7 kg) Net; 23.5 lbs. (10.7 kg) Shipping\u003c\/p\u003e","brand":"Audio Research","offers":[{"title":"Silver","offer_id":51677875536160,"sku":null,"price":12000.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":51677875568928,"sku":null,"price":12000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/3728\/1568\/files\/editARPH9silverfrontwhitebackground.jpg?v=1779298860","url":"https:\/\/salon1audio.com\/products\/audio-research-ph9-phono-stage-preamplifier","provider":"Salon 1 Audio","version":"1.0","type":"link"}