For what it is worth, the amplifier is as described.
The customer claims that one of the audio circuit boards mounted on the back heat sink assembly had come off in shipping to Hawaii! We got the unit back many months later when the client returned with it to the mainland USA. Sure enough, we got it back with some wiring damaged to one circuit board and a few extra small screws rattling around inside. We pulled the board, fixed the wiring, reattached the board firmly, and checked bias and overall circuit operation and very recently returned it to the client. We fixed it at our expensive as the client never put in a UPS claim at the Hawaii end. It does work like new now. Note that this unit was built before we started building in the HumDinger circuits but it runs very quietly here anyway.
Regards,
Frank Van Alstine