I actually own and use the pass int 60. It is a smooth and warm in the middle amp. At the same time is is very transparent. It tends to get out of the way of the music and you just listen. Bass is very controlled and doubles its power into 4 ohm. It has a tube characteristic, which I happen to like. I am using mine with the ls50 meta’s and the sound together is like nothing I have ever owned. I have never heard any of the other amps that have been mentioned, but I can tell you, you will not be disappointed if you go with the pass.
