So what is his secret?
I cannot claim to know, but I can say his amps seem to be built very well, to maybe overbuilt, with huge power supplies, and they run in all class A. The parts are of a high quality and more about service life than being boutique parts to help sell the amplifiers. The features are also well thought-out including, the top mounted heat sinks to help dissipate heat, WBT binding posts, cleverly located and high quality power and bias switches, and light on the back panel that helps owners remember the amplifier is powered up when they are making cable changes.