The Pro Power AUC-1 is a professional audio commentary system designed to increase the quality of sound for TV and radio broadcasts. It's an audio mixer, with two inputs and four outputs, allowing up to four microphones to be used simultaneously. It has an LED display for meters and other indicators, as well as an internal computer for remote control. The AUC-1 has an automatic microphone mixer, so you can easily adjust levels between the different microphones, and also has settings to make sure all broadcasted sound is of optimal quality. It also features a DynaMix software package that give operators control over the audio mix and levels. The AUC-1 also includes a backup power supply and emergency power shutoff to help protect it in the event of a power cut.