Experience with Simaudio Moon North amps

I just bought the Simaudio 861 amplifier upgrading from a SIM audio w8, The difference is unbelievable the amplifier is phenomenal It's about 25% better than the 761 and I have no doubt that this amplifier will go up against amplifiers in the 40 to $60,000 range from other companies and beat them, this is the first amplifier in the world that I know of that has no local or global feedback in the amplifier no other amplifier has that and there's no way I can go back to my w8 again even as good as it is.

I have the SIM audio 861 and comparing it to the 761 everything is just that much better the separation, air and space between the instruments decay of the echo, the voice sounds more human and I think my estimation was wrong now that I've had it for a while I think it's even more than 25% better than the 761, because of the MDCA circuitry this is the only amp that I know of that has no local or global feedback and I believe that this amp will beat amps in the 40 to $60,000 range from any other company It's that good. Lookout Boulder and Gryphon.