I played one of the demo units a while ago, and it sounded good, but didn't blow me away completely-- obviously being in a big exhibition hall meant that I couldn't crank it, but the power scaling seemed to sound just like the master volume at low levels. The guy supervising the amp also didn't know anything about it, including what the AFD switch was (told me it was the power scaling)... so it may have not been a final model. It sure did sound like AFD though, which was great :)