The TDA7297 is a 15 watt per channel integrated circuit made by ST Electronics. It is a class A/B amplifier and the first I've used from ST Electronics. It has short circuit and overload protection. There is a lengthy thread about this circuit on the diy audio forum with many reports on it's wonderful sonics. I equipped this one with a VALAB 23 step ladder style attenuator (which I love), Wima polyester film input capacitors, Cat 6e plenum grade signal wiring, gold plated RCA connectors, gold plated five way binding posts and a nice Nichicon 2200uf power supply capacitor. The chassis is a Hammond hand brushed aluminum 7" x 7" with a zebra wood veneer on the top. Four machined, gold plated, aluminum isolation cones provide the support on the bottom.