McCormack DNA1 options

Corina,

I can't speak for the TLC or Merlin but I can for the DNA1. Is yours the standard or Deluxe? I have both a .5 Deluxe and a REV A. There is a world of difference between the 2 amps. The REV A is much smoother and fuller sounding. The sound is laid against a black background and much of the grunge is gone. In addition, I do run a King Cobra power with this amp. Pretty much everthing that is listed at: www.smcaudio.com about the REV A is true.

I own a DNA 1 that I bought new and had uprgraded to Revision A. Even prior to the upgrade, I completely agree with Sean'a comments. My guess is your problem is most likely with your cabling, (of course your speakers and CD may be playing a role too :) ) What kind of speaker/interconnects are you using?

I'm not familiar with your preamp, but like the others stated above, it very well could be your source. I have a DNA-2 LAE and I've not experienced the negative attributes you mention.

There is a chance that if the amp and/or preamp AC lines/outlets are shared with say your digital source, coffee blender, microwave, furnace, light dimmers, etc., there could be sufficient noise in the AC lines to possibly approach one or more of the attributes you mention. It's amazing how much more articulate your system can sound when each component is given it's own dedicated line, some kind of power conditioning, etc.. Even disconnecting the ground can lower the noise floor significantly.

Of course, if it's in your budget, a few days ago I saw a McCormack DNA-2 deluxe Rev A for sale in audiogon for $4200.

-IMO

Thanks for all the pointers.
The discussion of cableing was very astute (you guys are good !). I should have qualified my description of the
system by stating that 97% of the time I am very satisfied.
This system continues to blow me away. It's really impressive. Here are some other details.

DNA-1 (non-delux)
Digitial source Rotel 951
Monster Power HTS 2500 MkII
Cables and IC. --well these are kinda a hodgepod.
Electrical power etc. very old house with non-dedicated
outlets.
Small sized room, with lots of acoustic treatments
(this was a huge improvement.

So perhaps I'll work on some cableing...
and then get the Rev.A and a tube pre....

Onwards and upwards.

best

Just a note on the tube preamp option. I have a DNA-0.5 Deluxe and recently bought a used BAT VK-3i to replace my previous ss preamp. The VK-3i is a wonderful piece of gear but the combination produces hiss that is clearly audible from my listening position. Thinking it might need to be retubed, I spoke with Kevin at Upscale Audio and he seemed to think the problem is that the amp is too sensitive. Victor at BAT also thought that might be the problem. Sure enough, I was able to hook up another amp and the hiss decreased dramatically. Now I have a dilemma since I really like both pieces. What I'd really like is a VK-200 but that's another story. I assume that the DNA's high sensitivity is due to Steve's preference for passive preamps but I don't know that for sure.

Good luck.

Dick