The 860A is head and shoulders better than the 330 monoblocks that's why it costs so much more it wouldn't even be a fair comparison I have used SIM audio for over 30 years now I have the w8 amplifier and p8 preamp, the evolution series is far superior to their lower line, if you can afford the 860A get it.
Two 330A versus one 860A?
Any advantages or disadvantages of using two 33OA in mono mode versus just one 860A?
thank u!