A professional grade audio power amplifier specifically designed for demanding contractor applications, the CP700 features esoteric grade toroidal power supply and output transformers. These transformers were chosen for their outstanding reliability as well as extended frequency response (-3dB @ 30Hz - 70.7V output through transformer) Now you can have the peace of mind that systems specified with the CP700 will have true transformer output isolation, a feature that previously may have not been affordable due to the cost of quality external transformers.