EMG BQS Control, bass, treble pots plus a concentric mid with frequency selector. Use your own volumes. Here's a link to the EMG website. They changed the design slightly. The one I have for sale is the older style where the pots are all hardwired together. Includes all knobs, including two for volume pots. $75 shipped CONUSA. I have a pair of EMG-SSD passive humbucker pickups. SSD are Stuart Spector Design version of the EMG-HZ. The pickups came out of a Spector Legend 5 string. They are the same size as an EMG 40 i.e: a four inch wide soapbar housing. $50 shipped for the pair CONUSA. PayPal is accepted. PM me with any questions.