Features of RCS80-1: separate volume control for Mic1, Mic2, MP3, line1, line 2 input. Bass and treble control. 5 segments signal level indication. Built in cooling system keeps component cool at all times. Inputs and outputs: (2) sets RCA aux inputs. (2) mic inputs. Rca REC output. 100V speaker red positive speaker output terminal. 70V speaker red positive speaker output terminal. 8 Ohm red positive speaker output terminal. Shared negative speaker output terminal.