4-channel mixer amplifier with its variety of inputs and the ability to output into either a 4/8 Ohm setup or a constant voltage distributed speaker setup, all-in-one solution for any application. Built to meet the rigorous demands of high quality commercial, industrial and Pro Audio sound installations. Its versatile design allows for maximum application flexibility while still maintaining the compact, lightweight form factor of Stewart Audio's CVA Series of amplifiers. Includes an adjustable gain microphone input with a configurable ducking setting allowing the speaker to easily talk over any other channel. Designed for sonic accuracy, high efficiency and extended duty cycles through the use of our Signal Sense Technology.