Roland Mobile Cube, Battery Powered Amplifier, Amplifier power: 2x 2.5 Watt, Loudspeaker: 2x 4"", Inputs for microphone (jack) and instrument MONO/STEREO (2x jack for keyboard, electric guitar, acoustic guitar, bass), 2x AUX IN (mini jack) and 2x RCA for CD/MP3 player, drum computer, etc., Equalizer and echo/stereo reverb for microphone and instrument input, Headphone connection: 3.5 mm jack, 6x AA batteries for 15 hours operation (included), 175 mA Current consumption, Flange for microphone stand, Dimensions (W x D x H): 280 x 108 x 177 mm, Weight: 2.5 kg, Includes batteries and carrying strap, Suitable power supply unit PSB-230EU available - Article number #138091# (not included)