Analog Ethos

Analog Ethos is a boutique audio company specializing in hand-crafted vacuum tube hi-fi amplifiers and DIY kits. Based in Malvern, Pennsylvania, its founder Perry Board designs and builds custom stereo tube amps (including push-pull EL84, EL34, 6L6 and single-ended 2A3 SET models).
For DIYers who enjoy building electronics, Analog Ethos also offers DIY kits including in-depth manuals that teach not just how to assemble the amplifier, but also the underlying circuitry and tube theory. The manuals are also available for free download on the website, giving great value to the hi-fi community.