Alright, so a few weeks ago I was playing my fretless bass through my GK head and cab, and I hear this distortion in the background, like the speakers are blown. When I play over the neck pick-up, it's not a big deal until I really dig in, but at the bridge, it's with every note. I'm assuming it has to do with the pick-ups, seeing as how my (passive) Fender Jazz doesn't have this problem at any volume level or no matter how hard I play. Even when all settings are flat, I still get the blown sound, and I'm really frustrated with it right now, seeing as how I just bought this **** a few months ago. So, someone help me out?