The power amp section is based on a classic Western Electric circuit using a quartet of 6L6/5881 tubes, but the unique preamp circuit features five cascading gain stages that employ five 12AX7 tubes.

Probably one of the most celebrated amplifiers ever made—the 33/303 two-box pre/power amp system from Quad—is back. The British high-end hi-fi brand is reviving the design 57 years after it ...

But if you’re looking to tinker and tweak and have more flexibility with upgrades over the years, passive speakers — which will require an amp to power them — are the way to go. Not only can you swap ...

British Hi-Fi brand Audiolab is adding to its flagship 9000 Series with a new range-topping amplifier system consisting of the 9000Q preamplifier and 9000P stereo power amplifier. The announcement ...