Peavey UMA-4300 4 Channel 300 Watts Mixer AmplifierDescription The Crest Audio UMA 4300 mixer amplifier provides installers and contractors a simple and efficient solution for a broad range of sound reinforcement, paging and background music applications in retail spaces, restaurants, lounges and waiting rooms. The UMA 4300 combines a four input mixer with a highly efficient Class D 300 Watts mono amplifier. Each of the four inputs can handle a variety of input signals, including microphone, balanced