I took my head in because the channel switch was messed up and it would go from clean to overdrive without pressing anything. I told him that I had an overdrive problem. He comes back to me later and asked if this was the problem, then he picks up an active bass and all this overdriven sound comes out of the amp. He said he had used a pair of really "hot" pickups. I have an active bass and I get distortion when I turn up loud. I run a backline 600 through a backline 15 in cab. My question is can the cab not handle the amp or do I have hot pickups? My bass uses a bart soapbar.