350W RMS, 850W peak.
This is the real thing. I bought a Yamaha NS-SW300 back in April, although that was good, it couldn't keep up with the real rumbling scene of some movies, particularly submarine scenes or ocean wave scene. Yamaha just rattles. I ended up upgrading to Velodyne DP subwoofers and all I can say is they are of different level. Now my whole room shakes. It's worth every penny.
Velodyne digital drive ones are really good, from back in the day to now