Hi all - as stated in the title, this control plate contains both a varitone and a series-parallel switch. From front to back, the controls are: 1) Concentric volumes for the two pickups 2) Series/Parallel switch 3) Standard tone control 4) Varitone bypass 5) Varitone control. The varitone is the same one that can be heard here: I think the guy that made these has dropped off the earth and is not making them anymore, so you won't see these for sale very often. The workmanship is outstanding. I had this one made to my specs - I specifically asked for the standard tone control so that I could bypass the varitone and have all the "normal" jazz bass controls - V/V/T. This unit can be dropped right into your jazz bass and has solderless connectors - it is super easy to install. I'm asking $100 including shipping CONUS. Thanks for looking!