I haven't heard the 225. I do have a DNA-1 Deluxe that was upgraded to full Revision A Gold, except for the balanced inputs, this past summer. I absolutely love this amp and the difference is incredible. I would easily do it all over again. I also believe that there are a lot of very good products out there and many factors that might influence your preference. If it helps, I'm using CAL Delta transport into a Classe DAC 1, and an Audible Illusions Modulus 3A with Thiel CS3.6 speakers. My room is 16x24 with a cathedral ceiling. All power cords have been upgraded and the interconnects are Transparent Ultra XL's.
McCormack amp upgrade / midbass warmth?
Hi I'm seeking some experiential advice from McCormack amp owners who have had their amps upgraded by SMC Audio. I was seriously considering upgrading my stock DNA-1, until I read the recent McCormack DNA-225 review in Stereophile. He mentions that the DNA Rev. A upgrade, although being a significant overall improvement, resulted in smoothing out the midbass warmth of the stock design. I suspect the "midbass smoothing" may result from revision of the DC servo circuit? This concerns me, because I prefer that midbass-warmth sound in my system (that's why I bought this amp). Of course I am going to consult with Steve McCormack in that regard. Would just the Rev. C, or maybe even the Rev. B upgrade also affect the midbass? I don't want to lose this warm sonic signature, it works nicely in my rig. I hope to hear from others who have done upgrades please? Thank you for sharing any opinions.