McCormack DNA 500 versus the best Pass Labs amp

I would consider the cj premier 350 and the pass x series as equals. The cj perhaps a bit more musical depending on your tastes and equipment and set-up...and.....and....and.

The DNA 500 is behind the other two mentioned above IMO all things being equal. The Pass XA series is better still assuming system synergy.

Thanks for your comment. Just to clarify, do you mean that the DNA 500 is bested by the old Pass X series or by the new Pass X.5 series (or by both)?

The DNA 500 is a very good amp as is the PASS models that you asked about. My preferences would lean toward the PASS XA series over the X.5 then the DNA.

I found the DNA 500 to be pretty good, but calling it "the best solid state amp" (I believe from the IAR review) is quite a stretch. Most amps in that price range have trade offs, and your success will depend on the type of sound you desire, your music preferences, and your partnering equipment/speakers. Keep in mind both the McCormack and Pass amps have relatively low input impedance, which will limit your preamp choices if you are looking at tubes.