After plugging the 2505 into a 20 amp circuit, WOW, everything snapped into place, the grain I heard in the treble disappeared, the bass tightened and became quite a bit stronger and the soundstage grew tremendously. The minute we switched to the 20 amp, I fell in love with this amp. Also, do not use bass poor cables with this amp. I strongly reccomend Audioquest Ruby or higher with this amp. Yeah its big,its on the heavy side.
Build quality is good,looks ok.
Sound hmmmmgood but not great or out of this world as some claim. As of this date there are no reviews on this amp yet. When the first does hit the newsstand, the audio world will discover how much this 110 pound monster really puts out. I have had the ATI 2505 for about a month now and find it to be truely outstanding. This amp has so much power and depth that it has to be heard to be fully understood.