I ha dthe OB1 on home demo for a week - the bass was good, no 'end stop' experience, and I play it LOUD. Low distortion, not much kick, but the go low enough. I expect they needed more juice than my electrocomp dual monos could muster. I didnt keep them due to the recessed midrange. In my room/system - lots of boom and tizz with the singer pushed behind the wall. Probably my system/room than a feature of PMCs.

The overall plus point was one of low distortion.