1 Mic input by 1/4″ phone jack, 1 Aux input by dual RCA, tel input by phoenix connector. Mic with Vox priority and telephone input with secondary input over all other inputs. 100V and 4-16 ohms speaker outputs. AC 120V or 230V to DC 12V power adapter to supply power. Mic1, Aux1 and tel volume control and bass/treble tone control.