McCormack Amp Upgrades

I had a pair of DNA-1 monoblocks driving Vandersteen 3A Sigs, gave those up for a pair of DNA-1 Dlx Golds (non momoblocked) that are vertically driving the Vandy's now and they are so much better than the monoblocks, I put the monoblocks back in a couple of weeks back and the bass was so over driven they didn't last the weekend (too much power). I also have a McCormack Micro Line Drive and a Micro Phono Drive that I had upgraded to Gold and they are not the same peaces of equipment they were before the upgrade, I know because I have the stock versions of both in my computer room. A great example of the improvements that I can give is on Dave Brubecks "Time Out", while Dave is playing the piano, as the hammer is striking the strings, with the stock equipment it sounds as if there is a layers of felt on the hammers and with each upgrade a layer of that felt is removed, making the notes sound more real and less like a reproduction. The funny part is without hearing this I didn't realize I was missing it. When doing a comparison I could not believe the difference. I tried the MLD in place of my TLC-1 Dlx and everything just became that much clearer, greater transparency, with more depth along with quieter, blacker back grounds, wow I was in heaven. The improvement were so great I've scheduled my TLC for the Full Monty with the Carbon wiring. Yes the bad part is you can only get back about half of your investment on the upgrades but if you have plans to sell your equipment down the road then you would be better off waiting till a modified unit comes up online and do a comparison then. By the way many Agoner's here recommend a tube preamp with the McCormack's and with the power demands that your Von Schweikert's have you just might wind up with an outstanding combination.

A great example of the improvements that I can give is on Dave Brubecks "Time Out", while Dave is playing the piano, as the hammer is striking the strings, with the stock equipment it sounds as if there is a layers of felt on the hammers and with each upgrade a layer of that felt is removed, making the notes sound more real and less like a reproduction.

That's an interesting claim.
Because the piano hammers do have a layer of felt. If the upgraded amps "removed" this layer of felt, this would make the stock amps more accurate now, wouldn't it.

This is precisely the reason I sold the modded SMc amp. It was not natural sounding, was colored, inacurate and caused listener fatigue. The big improvement over the stock amp was the improved soundstage size. Tonality was not as accurate as it was with the stock amplifier.

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?

Audphile1
Thank you, I've learned something new today, I did not know that about the hammers on a piano, I guess I and will have to go back and see what it is that my system is presenting to me then. I'm new to the high end of audio and still learning the terminology, so this is whats meant by Tonality? I can see your point about the upgrades possibly causing listener fatigue especially if the speakers your hooking them to are very revealing to start with. A very revealing amplifier with a very revealing speaker might be very very revealing. I guess this is what they call system synergy that comes with system matching? Still so much to learn. But like I said the upgrades make "the notes sound more real and less like a reproduction" in my system. So with that said.

Tube540
If you live within about 3 hours of Philadelphia and are willing, I would be more than willing to bring my pair of McCormack Dlx Golds to you place so that you can experience the upgrades and determine for yourself if they will be a good match in your system. And maybe learn something more about this system matching stuff for myself.

Tube540, if you are planning on doing a full-blown upgrade to the DNA-1, then it will probably total you to about the cost of a used DNA-500, in which case I suggest you opt for the 500. If you want to do the minimalist revision, it's up to you. But spending over $2000 + shipping back and forth on this amplifier makes very little sense to me.
Again, it is completely up to you to decide. but if I were you, I'd jump on the used modded amp if it comes up here(they do, just keep your eyes open), or a used DNA-500. To me this is a much smarter purchase.

But, who can tell you how to spend your money?