Yikes! What i meant to say is that the Rev. A DNA-1 is NOT forward in the midbass. It does not lack warmth. I prefer it to the DNA-225. BTW, I have heard that late-production DNA-1s had reliability problems related to the PCB used. This is hearsay. OTOH, my two early ones have been trouble-free.
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.