Picked up an old Sunn 200s today. This thing sounds great with guitar or bass. Hooked it up to my Kustom 8x10 and it sounds wonderful up to 7 on the volume knob. After that the tone gets distorted in a way I personally just don't like. Some may though. Still, really nice tone up to the half way mark. I don't believe it's loud enough to jam with a loud drummer and guitarist though. Too bad because the tone is nice. Put my ODB-3 in front and it's just super cool.