I had a DNA1 and not for a million dollars would I risk swapping it out for a Mac. You can take a pass on the unsound advice above.
Sorry, but
Send it in to have Steve work his magic. No regrets.
Upgrade McCormack or...
I have a McCormack DNA-1 Deluxe that I've been very happy with for the past two years, but I'd like to see if I can do better within a limited budget. Steve McCormack's folks at SMC will upgrade it for ~$1850 (Gold upgrade), but is there a better amp I can find for less than $3000 used (the approximate value of my amp plus upgrade cost), that might make more sense; any suggestions?