New Leem 4 channel micro mixer. A pocket sized, microphone/instrument mixer. Convenient and easy to use. Just connect mics or instruments to any of the four 1/4" input jacks then connect the 1/4" output jack to whatever you have. Each channel has its own volume with a master volume control for final, mixed, output. Design for low power consumption. 9 Volt battery powered or you can use a 9 Volt DC power adaptor. Comes with extra lead and instructions.