Hi! I'm having some issues with my JBass right now. It has a obp-2 preamp and the active mode is not working (actually, it has a passive/active switch). I'm almost sure that the switch is the real problem, but I'm considering remove the preamp, and leave it only passive. I'm not gigging right now and the preamp doesn't change the tone too much, IMO. What do you guys think? Remove it or leave it? Thanks!!!