Wrong, wrong, don't know how you think this is a replacement for the 801, nowhere near the same.Just found the part numbers in another thread: On-Semi MJ21193G and MJ21194G. ONLY get them from a reliable seller, such as Digikey or Mouser. If you try to buy cheap on eBay, Alibaba, or somewhere shady, you may well wind up with Chinese fakes. The real thing isn't that expensive, anyway.
Good luck, that's a great amp!