Anybody Tried this Room Correction Program?

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.