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Audio Research Phono Preamplifier Ph-7 - amlifiprea
https://amlifiprea.com/ph-7#:~:text=AUDIO%20RESEARCH%20PH-7%20Description%20Ph%207%20Audio%20Research,power%20requirements%3A100-135vac%2060hz%20200-270vac%2050%2080%20watts%20maximum.
PH7 PDF Manual-10-05 - Audio Research
https://audioresearch.com/wp-content/uploads/2021/06/PH7_Manual.pdf
To prevent fire, or shock hazard, do not expose your PH7 to rain or moisture. 2. This unit contains voltages which can cause serious injury or death. Do not operate with cover removed. Refer servicing to your authorized Audio Research dealer or other qualified personnel. 3. The power cord on your PH7 is equipped with a standard three-prong grounding plug.
Audio Research Phono Preamplifier Ph-7 - amlifiprea
https://amlifiprea.com/ph-7
Review AUDIO RESEARCH PH-7 PHono Preamplifier 2 Cm 50v RMS 1khz output. Distortion: less than. 16uv RMS equivalent input noise, UHF weighted, shorted 70 db below 1mv 1khz. 5 db of overall gain, and features one pair single-ended inputs outputs power requirements:100-135vac 60hz 200-270vac 50 80 watts maximum.
ARCDB
https://www.arcdb.ws/PH7/PH7.html
PH7 manual Specifications Frequency response ±.25dB of RIAA, 10 Hz to 60kHz; 3dB points below 0.7Hz and above 400kHz. Distortion (THD) Less than .005% at .50V RMS 1kHz output. Noise & hum 0.16uV RMS equivalent input noise, IHF weighted, shorted input (76 dB below 1mV 1kHz input). Gain 57.5dB at 1kHz (MC & MM compatible) Input impedance
Audio Research PH7 High Definition Tube Phono Stage ...
https://www.audiogon.com/listings/lisa9db0-audio-research-ph7-reference-tube-phono-stage-phono
SPECIFICATIONS -FREQUENCY RESPONSE: ± .25dB of RIAA, 10Hz to 60kHz; 3dB points below 0.7Hz and above 400kHz. DISTORTION: Less than .005% at .50V RMS 1kHz output. GAIN: 57.5dB at 1kHz (MC & MM compatible). PUSH BUTTONS: Power, Mono, Load, Mute. INPUT IMPEDANCE: Selectable 47K, 1000, 500, 200, or 100 ohms with 200pF Unbalanced.
The ARC PH7 Phono Stage - The Absolute Sound
https://www.theabsolutesound.com/articles/the-arc-ph7-phono-stage
Oh, the PH7 still has ARC’s characteristic upper-octave air and light, its lifelike image size and soundstage breadth, its incomparable bloom, but so many other ingredients have been added to the sonic recipe that is harder, at first, to recognize the classic ARC profile.
Audio Research PH7 Phono Preamplifier w/ Power Supply ...
https://www.audiogon.com/listings/phono-audio-research-ph7-phono-preamplifier-w-power-supply-upgrade-11356-2018-01-12-preamplifiers
The Music Room is Audiogon's #1 Rated Dealer of Pre-owned Audio Gear! Want to buy this item now at our lowest price? Click Here to buy Now. Product: Audio Research PH7 Phono Preamplifier w/ Power Supply Upgrade. Product SKU: 11356. Serial Number: 0840. Voltage: 120V
KOETSU VERMILION and audio research PH7 - Audiogon …
https://forum.audiogon.com/discussions/koetsu-vermilion-and-audio-research-ph7
I think Koetsu measures output at a stylus velocity of 3.54 cm/sec, the old standard. The new standard for many years is 5 cm/sec, which would give a higher stated output. You might luck out if Koetsu is understating the output by current standards. Like I said, my Urushi behaves as if its output is greater than the claimed 0.4mV.
audio research ph7 & Cartridge - Audiogon Marketplace
https://forum.audiogon.com/discussions/audio-research-ph7-cartridge
Audio Research Phono: 57dB for MC's You have minimum 69dB gain for a MC Cartridge in this combination, that's enough for everything, the next step is 75dB balanced output A MM System is a interesting choice.
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research continues its dedication to unparalleled musical expression and crafting components of the highest quality and lasting value for its customers. Our long-term dedication to service is peerless in this industry (Audio Research, with few exceptions, can repair anything ever produced during its entire history).
Audio Research Reference Phono 2 Phono Stage - The Audio Beat
http://www.theaudiobeat.com/equipment/audio_research_reference_phono_2.htm
Preset values include 50, 100, 200, 500, 1000 and 47k ohms. In fact, the Reference Phono 2 goes the PH7 one better by allowing you to install your own load, or Audio Research will do it for you at the factory. A Custom button on the remote gives easy access to this.
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