Torpedo C.A.B. M now includes a free upgrade to Torpedo C.A.B. M +. New and existing C.A.B. M owners can simply upgrade their CAB M firmware via Torpedo remote (USB). This FREE update includes a stunning clean preamp (based on an all-original '74 Silverface B'man), audio enhancer, tuner, additional reverbs and a noise gate to work seamlessly with the power-amp simulators, virtual cabinets and dynamic IR technologies within the acclaimed Torpedo C.A.B. M.