What does the tribe think about the new craze of digital amplifiers?

I hate to admit it but when I went to school there was no such thing as class G, H, I, J, K or whatever.

Anyone using them?

What say?????

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