Matthews Effects The Conductor v2 - Optical TremoloHop on board with The Conductor V2, an optical tremolo that features the same warm, natural sound of the previous version. Version 2 includes more than just updated graphics. The improved Conductor brings additional wave forms & subdivisions, with onboard tap, external tap and expression inputs. All of which bring you a wide variety of controls so that you will be able to engineer your ideal tremolo tone. View the manual here Controls: Depth: Controls