The Roland KC-220 3-channel keyboard amplifier is your ideal mobile keyboard amplifier, complete with battery operation and full-range stereo sound. In fact, it's also a well-equipped portable PA with built-in chorus and reverb effects, an auxiliary input, and an XLR microphone input for vocals. With dual 6.5" woofers, two tweeters, and 30 watts of power, the KC-220 is ready for practice sessions, gigs, and even street performances.