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Audio Research LS7 Preamplifiers user reviews : 2.8 out of ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/ls7.html
Feed it the best tubes money can buy. It deserves the best. (Amperex 6922's go for about $50 a piece (used) on ebay--and worth every penny. Don't even thing about buying a LS-7 without feeding it some good tubes for about $200. The LS7 is a keeper. Similar Products Used: McCormack MLD and RLD-1, Adcom 750, and Placette Passive [Sep 08, 2002]
Audio Research LS7 - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-ls7-still-a-good-performer
The LS7 is a nice entry pre from ARC, I would change the tube to Telefunken or Amperex 7dj8 as they sounded the best in my LS15 and LS25. I also liked Ei Elite 6dj8 gold pins but they have since gone out of business and are very hard to find. For the price IMHO the LS7 is a good deal and you should be very happy till the upgrade bug bites.
Audio Research LS7 Stereo Tube Preamp Black | …
https://reverb.com/item/43443436-audio-research-ls7-stereo-tube-preamp-black
It's the LS7 stereo line preamplifier featuring all-tube circuits that deliver rich, satisfying sound and world-renowned Audio Research construction. SPECIFICATIONS FREQUENCY RESPONSE -± .5dB, 1.0Hz to 100kHz -3dB points below 0.1Hz and above 300kHz DISTORTION (THD) -Less than .01% at 2V RMS output.
Audio Research LS7 tube preamp w extra tubes | Tube
https://www.audiogon.com/listings/lis9cgii-audio-research-ls7-tube-preamp-w-extra-tubes-tube
Audio Research, the leader in vacuum-tube technology dedicated to music reproduction, has made vacuum-tube music more affordable than ever. It's the LS7 stereo line preamplifier featuring all-tube circuits that deliver rich, satisfying sound and world-renowned Audio Research construction...Truly out-of-this-world performance." Thank you.
Replacing 6922 Preamp Tube in ARC LS7 - diyAudio
https://www.diyaudio.com/community/threads/replacing-6922-preamp-tube-in-arc-ls7.217733/
Hi all, Finally bought my first tube based audio equipment, an Audio Research LS7 Preamp. Being a newbie and dunno much about tube, I would like to ask for opinion on option in replacing the stock 4 x 6922 tube so that it sound more …
Audio Research Amps - the tube store
https://www.thetubestore.com/shop-by-amp/home-audio-tube-packages/audio-research-amps
These tubes will provide your Audio Research amp with great sound for a reasonable price. For those who need to re-tube for less, our Upgrade Packages consist of excellent sounding amplifier tubes for lower cost. If only the "best" will do for your beloved tube amp, we have Ultimate Packages that include NOS made vacuum tubes whenever possible.
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