Roland KC-220, Keyboard amplifier, Power: 30 W (2x 15 W), 2 newly developed 6.5"" woofers and 2 custom tweeters, Built-in mixer with 3 input channels and a master EQ, AUX input with stereo mini jack and RCA connectors, Built-in DSP effects: reverb and 2 chorus types, XLR microphone input, Mono / Stereo line output and headphone jack, Robust metal connectors, Runs on 8x AA batteries or the included AC adapter, Removable battery compartment for a quick changeover, Built-in tilt-back stand and integrated mount for optional ST-A95 speaker stand, Dimensions (W x D x H): 420 x 244 x 320 mm, Weight: 7.3 kg