Hey gang - I read through the FAQ and couldn't find anything like this, so here goes: Combo used to be: -Ampeg SVT Preamp -Crown PowerBase II Power Amp -Eden D410XLT It used to scream and was crystal clear. Combo is now the same except the Ampeg has been replaced with a GK 2001RBP. The only way I can get close to useable stage volume is to run without the -10dB pad and with the gain and master volumes cranked, which can't be right. I've tried: - Other basses with similar electronics / fresh batteries (no change) - Passive basses (no change) - Another D410XLT (no change) - Switching power amp channels (no change). Note: both channels of the Power Base II have attenuators, which I leave at 0 (all the way up) and only really touch them to troubleshoot / test. I have not tried another power amp altogether. Anyway, What can I check myself? I have a VOM and am not afraid to use it. Or has anyone else ever had a problem like this? Thank you in advance!