Anybody Tried this Room Correction Program?

Unsound, I don't know what you mean by "compromise the signal with analog at all?" It has to be converted to analog somewhere for the speakers to reproduce it (and the amplifier itself). And these errounously called "digital amps",if that's what you are proposing, are just class D amps in which there's is actually nothing digital about them, they are analog units and have been around as early as 1928 long before digital ever came to be. Class D just happened to be next in line after Class C, but these days the marketing just calls all Class D digital. There are a handful of ~true~ digital amps that do the DAC in the input stage (they take a digital signal as opposed to an analog signal (like the Class D amp in your velodyne sub)), but these units still have class D ouput stages. And the output stages is what determines the amplifiers operating class. Class D sucks for the most part. Class A and class B will always offer less distortion if done right. So I'm hedging there's probably less distortion converting the signal over to analog and feeding it to a regular A or B unit as oppossed one of these hybrid DAC/Class D units. The devil is in the detail, but Class D isn't great.

Ezmeraldall, I might be mistaken but I believe the TacT amps to be pure digital.

I'm not for super-certian with what TacT is doing inside, so maybe they do have something completely different, you may be right. I did just nosy on over to there sight. They would be about the only ones that would even have something "pure digital." (If memory serves maybe Wadia too had something similiar.) But the majority of the others are just Class D analog the whole way through. I may loom over on DIYaudio.com and see what more of the engineers are saying since I've seen TacT come up in discussion.

http://www.diyaudio.com/forums/showthread.php?s=e80d7dd05f01fce38712d6956a3e4657&threadid=1989&highlight=digital+amplifiers

That link has a healthy discussion on the amps, with specific mention given to what tact is doing. If it doesn't work, go to diyaudio.com, click under the "digital" forum, then click "search" and then type in digital amplifiers and one should come up about amplifying an ESL with a digital amp.

Ezmeraldall, thanks for sharing your research. Some people seem to think that some of the newer versions of class "D" aren't so bad. It seems to me that the Spectrons, Bel Cantos and Linn have recieved some decent reviews. I understand that Jeff Rowland, Accuphase and Edge are using some form of digital in thier amps. I really don't know very much about any of these products, though. Who knows where this will lead?