Resource
Audio Research
American vacuum-tube amplifier specialist founded in 1970 by Bill Johnson. It is privately held and builds its amplifiers and preamplifiers by hand at its Minnesota facility.
Where to buy
Availability varies by region and retailer. Authorized dealers are listed on the official Audio Research website.
- Search Audio Research at Amazon
- Search Audio Research at B&H Photo
- Search Audio Research at Music Direct
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Verification sources
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