I had a Krell FPB300 (and KAS-2) as well as Pass Aleph 0 mono blocks. The Krell FPB was warm with good pace and prodigious drive and bass control. The PASS is completely different, presenting a very diffuse, relaxed sound. After a while, the Pass amps made too many things sound slow and syrupy. I have since moved on and believe an amp needs power and speed as well as warmth. Result? I'm a huge Goldmund fan. I'd try to find a Mimesis 28 or used 9. But given a choice between the Pass and Krell for your speakers, I'd go with Krell (of which I am still a fan).
