McCormack DNA 1 Rev A Mono blocks WOW

Hi N2siast

What is the revision date of the McCormack DNA-1 Monoblocks you have? I'm very curious because I'm wondering if the earlier Revisions from 1999 to early 2000s are the ones that sound really good. Most of the time on Audiogon the only Rev B to Rev A stuff that comes available is from that time. It doesn't seem like the Revisions in recent years ever pop up.

Thanks

I love my DNA-1 Rev. A.

Jedinite24

The info I got from steve is that these were originally from early production (around '91 - '92) but were thoroughly rebuilt in the upgrade process.

The full Revision A treatment was pertformed sometime in the early 2000s.

Thanks for the clarification N2siast. Good to know the older Revisions sound great. I tried pricing out current revisions plus acquisition costs of a pair of DNA-1s and the costs were rising way past the funds in my bank account.

It's a good idea to have the mother board replaced as well as the old emitter resistors. The early boards had issues with the through hole plating over time and the protection circuit starts to become an issue i.e. false triggering. New filter caps as well.