DNA 225 cannot go wrong with this amp. I have had it for about 4 years. This is the one amp that has always stay put through all changes I have had in my system. It is the only one I paid almost full retail price and guess what? I never had buyer's remorse with it. Fast, dynamic and utterly musical, as well as being fairly neutral, but NEVER cold. If you like your music to sound exciting, there is very little out there for the said price that can equal, and obviously never better it. If you acquire it, remember to get a decent power cord and you will be set, until the next upgrade comes around....while always keeping it. A great match after it, would be an awesome tubed preamp.
Counterpoint? Hum, no. Reliability issues. McCormack amps going to the frier? Never. Oh, great upgrade and modifications available my Steve himself.
The OCM 500 is also a decent amp for the price. David Belles is one of the most unrecognized genius of the business. Cannot complain, if it was for star power, all his designs would cost thousands more.
GL with your hunt.