Electro Harmonix 6550's ordered Oct 26, 2011 15:34:49 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by shreder75 on Oct 26, 2011 15:34:49 GMT -5 in addition to the appropriate resistors to change the bias range...should be in the amp in a couple weeks..should be interesting