I have a Kustom GB1200 and a Dean Edge Hammer. It's a great head but I've encountered a wierd problem. On the pre amp side the bass is clipping the pre no matter what I set the gain at. But not tripping the signal light. I sent it to my service rep and he said nothing was wrong. So is this something the Pre amp in my bass is causing. If the amp is o.k. which I believe it is. What can I try with my bass to fix this problem. My bass is active. My rep plugged in a passive bass with no problems. Argh I wish my bass had an active passive switch. Any advice would be appreciated. Thanks in advance!