I am using a Barcus Berry 300A pickup and I'm having real problems with getting a decent volume out of it in gigs. I am in an electronic band which uses electronic sub bass and various other whizzes and beeps of different desciptions. I play through Trace Elliot 300W amp which is fine for my Bass guitar - more than fine in fact. But everytime I try to turn up I get horrible feedback. I have tried every combination on setup, from having the pickup preamp up high and the amp low and vice versa, I have tried making it more trebley, less trebley... everything! But still feedback. Is there something I can do with my current setup? or should I go for a different pickup - if so which one?