ROLAND KC-200 is a 4-channel keyboard amplifier for exercises and live performances, with 12" speakers and 100W of power. Technical features include 100 watt high efficiency amplifier with 12" speaker and horn tweeter, 4 channels including 1 mic/line with microphone input via XLR and 6.3 mm TRS jack, 2 line inputs via 6.3 mm jack, 1 monitor input via 6.3 mm jack, 1 monitor input via 6.3 mm jack, stereo Aux input via RCA L/R and Minijack 3.5mm TRS, dedicated volume control for all channels, 2 band equalizer, Main and Sub outputs via 6.3 mm jack