VOCOPRO 2X135W AMPLIFIED MIXER 110/220 Peak Power (Maximum): 100W + 100W max at 8 Ohms - 135W + 135W max at 4 Ohms Professional Digital Echo with Individual Repeat and Delay controls to provide clear and professional sounding vocals 9-step Digital Key Controller changes the key of the music without changing the tempo (half-steps) On-board Video Switching with 3 sets of Audio/Video Inputs, 2 sets of Audio Outputs and 1 Video Output 4 Microphone Inputs with 2 Individual Controls