With monitor level control and mono/stereo switching, the ma400 has everything you need, even for the most demanding performers on the stage.Change flexible microphone and microphone connectors and ground lift switches, as as stereo monitor inputs and dedicatedConnector: RCA, 1/4 inch Power: DC 12VPower adapter:input 240V 50 / 60Hz, output - 12V 500mAPlug Type: EU Plug, it applies to Indonesia, , , , and so on.size:10.3 * 5.7 * 3cm / 4.1 * 2.2 * 1.2 inchMaterial:metalcolour:BlackPackage Contents:1 * Preamplifier1 * EU PlugOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.