For what it's worth, I was using a Unison Unico (80 watt/ch, tube-SS hybrid, integrated amp) with the Ohm MWT's and (later) the Ohm 100 S3's. In terms of volume without distortion in a 13 x 15 room, they gave me all that I needed. I've since moved up to separates bought used here on Audiogon, and the sound has improved substantially. But I can report that 80W into 8 ohms is more than enough juice to drive the MWT's and 100's... can't speak for the new 1000's, though. But the Ohm speakers do definitely reward improved electronics with better performance.