McCormack or Pass Labs

You'll never know until you, yes, "TRY SOMETHING!"
I mean, are we really going to convince you as to what the differences really are?
I've sold both the Pass and McCormmack lines in the past. At the price points, I like both. The Pass is better overall as a line, and at least a step up to class A! The McCormmacks are strong class B. That's it. The refinement and body of the Pass X series are a cut above, not to mention soundstage, midrange, musicality, etc.
Although, I like the X150 and X350 better personally, especially the 350. The McCormmack has similar tonality, if not a little cooloer sound, with smaller soundstage, less sweet midrange, and not as pristine of a top end. Dynamics are good on both however. Still, I'd try either, and see what you think! You can always sell remember...thus the used market trade thing...
BTW, the Threshold T200/400 is better than the McCormmacks as well, if outdated however. Still, you can find those for $1300-1600 price range used, and they're Superb also.

Although I have not heard Pass Labs amps, I did just recently get to audition the McCormack DNA-225, as well as Theta Enterprise, Theta Intrepid, and Edge NL-10. The DNA-225 had what I thought was a nice tonal balance with a slight emphasis in a narrow band of the upper-mids, and it certainly had a good deal of control. However, its main weekness seemed to fall in an area where I am most critical, and that is imaging and soundstage. Both of the Theta amps bested the McCormack in this regard - the Enterprises by a very wide margin. The Edge also imaged better than the McCormack, but not as well as the Enterprise. The Thetas also were a bit more musical, and had a more airy top end than the McCormack.

If imaging, and depth and width of soundstage, are important to you, the DNA-225 might not be your best option. I am sure that the Pass Labs amps are very nice, but from the amps that I heard, I will be going the Theta route.

Hope this helps, Tom.

Thanks for the responses, guys. I have a T-series amp right now (it's for sale on Audiogon).

I was leaning toward the Pass. It's hard for me to reconcile how McCormack could get that much legitimate power out of a relatively light chasis, having read Nelson Pass's treatise on power supplies, etc.

Thanks!

J

Jwilt,

You asked about McCormack DNA-2 Rev "A"s, but feedback thus far has been limited to McCormack's "in general" and the DNA-225. Read the info (reviews and threads) about the aftermarket revisions by Steve McCormack at SMC Audio. I'm sure you already have though, or you would not have mentioned the Rev "A" in your thread.

My understanding is that these mods turn the amps into something very different than the stock versions, which are the only versions mentioned in the thread thus far.

I'd like to tell you how my DNA-1 Rev A mono-blocks differ from the "stock" DNA-1's, but I've never heard the stock versions. However, I can tell you that I enjoy my Rev A's. I have compared them to Krell 450-mcx, Classe CAM's, Wolcott ?, Mark Levinson 332?, and a few others. I discovered that I would have to spend a lot more to be a lot happier.

Good luck,
Jim