Right now there's a pair of Pass Aleph 60 monoblocs on Audiogon. Based on my past experience with these, I'd suggest they'd be great for these speakers. You'd get 90 watts per channel into 4 ohms, with monobloc separation.
I sold mine simply because I kept my Aleph 2s, which have more power..
I sold mine simply because I kept my Aleph 2s, which have more power..