Bob, they were rated at 350 watts per channel.
From the factory brochure:
Power at clipping:
Typically 400 watts pe channel @ 8 ohms R.M.S, 700 watts per channel @ 4 ohms R.M.S, 270 watts per channel @ 16 ohms R.M.S.
A friend of someone I know has two of them in a home theater system. It packs quite a punch and is amazing the way it drops dead when the input signal stops. Stone silent.