Dosn't sound warm. Mine is quite old and still performs extremely well. These are great for the budget tight consumer. It needs a little more power if you want to drive big speakers but it does deliver the rated amount of 100 watts. Good power, and smooth bass reproduction.
Highs are a little harsh at times and the midrange is a little washed out.
Not real bad though. Some of the other amps may have better midrange but their strong points don't out way the Adcoms bad points. As I mentioned earlier the biggest fuss I have with this amp is that the vocals can seem a little distant at times. For sound quality I would give it a rating around 3-3.5 But, for what you get for the money it has to be a 5. I wont even buy this crap for a dollar.