Thank you everyone for your responses. I hooked up the DNA-1 for the first time (just got it yesterday) and am floored by the amount of power, clarity and finesse. I think I could live with it as is and not be disappointed. I'm waiting to hear back from SMC to see what they recommend as a "cost effective" upgrade for this amp. In the meantime, I'll be enjoying it just the way it is. I'm using the Cary AES AE-3 DJH tube preamp. I agree that a tube preamp is a great match to this solid state amp. I may or may not go for an upgrade. It all boils down to degrees of improvement. Since I can't borrow an upgraded amp from anywhere I just have to go with people's experiences with upgraded DNA-1's. I also will ask SMC if the upgraded DNA-1 is better than the stock DNA-225. If not, then maybe it's best to use this one for a while, sell it and buy a DNA-225. Anyone have a chance to directly compare an upgraded DNA-1 to the DNA-225?
McCormack Amp Upgrades
Looking for comments on McCormack amp upgrades, either done by McCormack or other modifiers. I'm getting a DNA-1 shortly (stock) and am looking for a cost effective upgrade. SMc offers silver, gold, and platinum upgrades. Would appreciate any comments regarding upgrades they got and the difference in sound. Spending as much (or more) on upgrades as the amp cost is significant, and when you look at the total investment you could move up to a more expensive/newer amp. Hope to hear a noticeable difference when spending $900 or more on upgrades. You can reach a point of diminishing returns when spending this much or more on upgrades, as you sit in your chair and try to convince yourself that you are hearing something better. What have you tried or heard? Do you think it is worth spending $900 to $2000+ in upgrades for this amp? Or should I use for a while, then move up to a stock DNA-225 or something else like a Pass Labs X150 or X250? Speakers are VS-4.5. Thanks for your comments and opinions.