Hey everybody. I've had my BA210SP combo for almost a year now and I've never been able to get a full, energetic tone. It sounds "airy" and generally weak. I was wondering if someone could tell me what the problem might be. The only things I can think of are: Acoustics: I'm playing it mostly in my basement with a low ceiling and a lot of metal heating ducts and such. Maybe this is effecting how I hear it.... The Built-In Effects: I hardly ever use them, but could they be robbing the rest of the amp's power even while turned off? It's frustrating because I play a Behringer (spelling) at school for jazz band. It's only 100 watts, but it has so much more output than my 220 watt Ampeg. Even my little Fender 25 watt combo has a "fuller" sound. Also, the amp hisses like crazy. Anything I can do to prevent this? Any advice would be appreciated. Thanks.