During soundcheck of a gig on Saturday noticed my active bass was giving a buzz to my amp. I tried various checks to ensure it wasn't my effect causing the buzz so fairly certain it was the bass. Even ran an extension cord to the other side of the stage hoping it was grounding on my side. To reduce the buzz, I had to turn down the mid-high knob on the bass which cut back my enjoyment of the evening as the bass lost a lot of the highs. Don't have this problem at home or our rehearsal spot so I figured it was the electrical at the gig's location. Has anyone else had this problem? Were you able to resolve? Has anyone tried one of these to eliminate the problemhttp://catalog.bitsltd.us/catalog/SMART/LCG3.html ? Thx.