McCormack DNA 0.5 Gold or what?

@labtec   Exactly right!! I just had my 21 year old DNA-1 driver board replaced by Steve and Patrick at SMc Audio along with a panoply of other upgrades such as all new wiring,Furutech IEC inlet new Cardas RCA input jacks and new speaker binding posts.  As good as my Rev A+ amp was it is so much more open, sweet, detailed and dynamic now.  If the OP can get ahold of a previously modded DNA or a stock piece, for a modest investment the SMc guys can do their magic to it.

@rick542  Give Steve McCormack or Patrick a call at SMc Audio.  They can probably tell you what's up with it and what it would take to remedy the issue.

@jaynemo1962   I just recently had my DNA-1 Revision A+ upgraded to Gold Special status.  Steve said that anyone with a driver board 15+ years old must have it replaced if they send it in for upgrades.  My board was 20 years old and was replaced as well as a free replacement of the soft recovery diodes.  When all said and done, only the case, transformer and Nichicon Gold Tune caps. remained.  Everything else is new.  Biggest improvements I hear are openness of soundscape and dynamic ebb and flow.  Low level detail is superb.  All this for a very reasonable cost considering how much was done to it.