So pretty much up to a little light welding thenRated at 200 wpc in to 8 ohms and 330 wpc in to 4 ohs, 2 ohms stable.
Measured by Stereo Review (1989) as 250 wpc at 8 ohms, 400 wpc at 4 ohms, 650 wpc at 2 ohms before clipping.
And yes, it's a beast. Weighs 60 lbs.