"Since I had worked in the industry, when my Accuphase P300 failed, I knew the rep and went directly to the TEAC out repair center in LA. An output transistor had failed. They did not just replace the transistor, but also matched betas. Basically they made sure that all the output transistors were with an extremely tight tolerance of each other in the Accuphase P300.
A few months later a high end McIntosh dealer was having an amp clinic with a MacIntosh tech and testing equipment directly from MacIntosh. When they saw my JapanMac they openly said they had tested many, and the specs were not that great.
They set everything up and tested it, fully confident that they were going to show me how bad the P300 was. As the tech continued to run through the tests he became more and more amazed. Not only could he NOT show me how bad it was, but it more than met every single McIntosh spec. When he was finished he said you have a really good amp there. I never mentioned that the output transistors had been hand matched. I left them all with egg on their faces."