I finally got a chance to try out my GS212 with my jazz combo. It sounds incredible. When I don't turn it up really loud I can't even tell the sound is emminating from the cab instead of my bass. It is perfect. I'm running K&K pickups into an svp-pro (with Sovtek 12AX7LPS tubes) into the aguilar. Actually I'm starting to think it sounds better amplified than acoustic!