I like the E Mat more than any idea of how it works---just placed my second mat 12 hours ago, let it sit for 8 hours--now listening. Things that are happening: a more dramatic low end, a quieter floor--as if the room just became a small cavern.
How does the mat work--is it a power source or a receiver? Don't ask---this is a cutting edge idea that deserves its proprietary status.
Now, no CD sounds bad. I'm pulling stuff out I put away years ago due to flat or lifeless sound. I can't find one of those anymore--wasn't the production so much as the playback--it's come a long way since.