Aluminum alloy housing?? good durability.</br>Capable of remotely control 6 devices.</br>Has 128 presets.</br>Lock function?? disable knobs function to ensure preset won't change during performance.</br>Powered by a 9V power adapter.(not included)</br></br>Product Description</br></br>PMS-2 is a MIDI switcher that is able to switch 6 devices with more than 128 presets. With an external foot switch?? you can easily remotely control several amplifier channels and effects.? <br /> <b>?</b> <br /> <b>Specifications:</b> <br /> Power: DC 9V power adapter(not included) <br /> Power consumption: 50mA <br /> Product size: 12 * 8.5 * 5.6cm / 4.8 * 3.3 * 2.2in <br /> Product weight: 349g / 12.3oz <br /> Package size: 20 * 14.5 * 6.5cm / 7.9 * 5.7 * 2.6in <br /> Package weight: 413g / 14.6oz <br /> <br /> <b>Package List:</b> <br /> 1 * MIDI Switcher <br /> 1 * User Manual(English & Chinese)</br><br/>http://www.amazon.com/gp/product/B00P3BPI4Y