Can you give us an idea of about what power level you have been using on a continuous basis that gets the unit hot?

10 Watts per channel?

50 Watts per channel?

Running hot, in general, is not such a good thing for electronics.

The Rat. M80s, VP-150, QS8s, SVS PC 20-39+, OPPO, Onkyo 703s, Harmony 880 Sony 60" SXRD HDTV