The first of Mike McGary’s creations, the Stereo Amplifier One (SA1) is the culmination of over two years designing, testing, parts tweaking, patience and much persistence in creating a beautiful sounding tube amplifier. The design is simple, practical and refined. The SA1 uses a differential pair 6BQ7A (NOS GE JAN) input tube connected to a differential pair 6SN7GTB (NOS GE), which then drives the output tubes in a push-pull Class AB ultralinear configuration. Minimal global feedback is used to provide audio reproduction quality that is delicate and airy, powerful and punchy in both high and low frequency extension. The sound quality is everything one would desire for midrange liquidity and ambiance using vacuum tubes, and yet delivers the deep bass slam or impact heard in solid state amplifiers. Each SA1 is hand built by Mike McGary using point-to-point wiring with tag construction, quality components throughout, and thoroughly tested before it goes to the consumer with a lifetime warranty.