The RockBoard® LM 4 is a very compact four-channel line mixer capable of combining four mono line level input signals into one mono line level output. Each of the four input channels has its own amplifier and its own volume control and delivers professional low-noise audio quality. Its robust and compact design makes the LM 4 the ideal choice for studio and live situations. Ideal as a sub-mixer, for example for multiple keyboards, to avoid taking up valuable channels on the mixing console.
