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Tubeset for Audio Research PH7 Phono ... - Tube Amp Doctor
https://www.tubeampdoctor.com/en/tubeset-for-audio-research-ph7-phono-preamplifier-with-power-supply-upgrade-6l6/5881
Tubeset for Audio Research PH7 Phono Preamplifier with Power Supply Upgrade 6L6/5881 Tubeset includes: V1-V4: 2x RT-6922-MP:…
Audio Research PH7 - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-ph7
The PH7 originally was made with 3 power supply tubes which ARC came out with a upgrade to the unit to convert it to 1 power supply tube. This unit does not have that upgrade and I was considering sending it in anyway to have that done.
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 Cosmetic Description: 8/10 Excellent condition with minimal visible cosmetic wear including …
ARCDB
https://www.arcdb.ws/PH7/PH7.html
Output coupling caps are the costly, advanced types proprietary to Audio Research, with power-supply energy storage more than three times that of the PH5. Circuit board material, power transformer design and size, and other components have been exactingly selected to boost phono performance to a previously unachievable level.
Audio Research PH7 Vacuum Tube Phono Preamplifier | Phono ...
https://www.audiogon.com/listings/lisa6576-audio-research-ph-7-vacuum-tube-phono-preamplifier-phono
Audio Research PH7 for sale. I have upgraded in the line and here is a near mint PH7. This model had the power supply upgrade which replaced two of the 6H30s with a 5881. You can see on the ARC database website that this was a...
Audio Research PH7 phono preamplifier – Reviews ...
https://www.tonepublications.com/review/audio-research-ph7-phono-preamplifier/
Audio Research PH7 phono preamplifier. Built into a chassis that’s bigger than many power amplifiers, the PH7 offers an unusually high amount of features for a phono stage such as remote-controlled cartridge loading, which we found particularly enjoyable. This tubed unit also enjoys ARC’s legendary reputation for reliability and ease-of-use ...
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