Update- The amp has broken in a while and is getting better. I am using it in my desktop system powering two Boston Acoustics Soundware speakers and an ASW250 sub. Very convenient the amp has a sub out. This amp likes to be cranked, a lot. At lower volumes you get a pleasant enough soundstage but at volume you just become completely immersed. When you set up ARC you calibrate 5 positions, the center and then the four corners of your listening area. In a desktop setup you don't even need to get out of your chair. to run ARC I think ARC is what makes the immersion into sound so total. It is like you are in a bubble of sound and when I play music with really deep bass there is 0 boominess, just tight, toneful BASS. Outstanding amp and if you are thinking of upgrading speakers I would advise try this amp first. I feel it helps my speakers deliver their best.
The internal DAC is good but the Parasound ZDac I have feeding it via RCA inputs is slightly better. This amp punches WAY above its current $179 price on Amazon. I have a Klipsch Powergate integrated amp on order and will post a review and a comparison once I get time to compare.