I let some guys from another band last night, lift my 200 by the handle. The bass player had an ampeg 810 in a full road case. He said he left his svt head which is also in a road case at home, and used a pf500 last night. When they started, the bar owner (who I've known for almost 20 years of his promoting shows) said to me "sounds kinda thin". Well we all know that pf series class D heads are a little weak for their power ratings, and 810e cabs need a lot of juice to get going, maybe he just didn't turn up that loud because those amps have a tendency to go into overheat mode.