Pass vs McCormack?

IMHO, and to keep it brief, the biggest difference is that the McCormack amps tend to be forward of neutral, the Pass amps are incredibly neutral. Depending(!) on your speakers, budget and/or listening preferences either can be an excellent choice.

Oops, my first response was referring to the latest Pass amps, the earlier Aleph and some of the Pass First Watt amps are quite different, some being quite recessed IMHO.

Unsound and Mcondon, thank you much for your comments. Unsound, that is the kind of very valuable appraisal we can only get from each other and the kind of thing that helps us know what we want.

Mcondon, I suspect the X150.5 is a bit more than the Pass Aleph 30s or McCormack in my budget? But bet they sound nice...

Thank you.
Jim