This is a Patcom CA30 Professional Power Amplifier, a 2-channel Class-H audio amplifier often used for demanding sound reinforcement.It features a large toroidal transformer centrally located and multiple heat sinks for cooling.The front panel includes input level controls for channel 1 and channel 2, along with LED indicators for signal and clipping.Depending on the specific model variation, power output typically ranges from approximately 5400 watts to 9000 watts.