Mackie Big Knob Passive offers a rock-solid monitor control solution for any studio. Choose your source, choose your monitor and control it all with one Big Knob.

-Excruciatingly simple 2x2 monitor controller

-Choose between two sources and two monitor pairs

-Classic Big Knob volume control

-Professional mono, mute and dim functions

-Pristine audio quality

-Passive audio path with no power supply needed

-Sturdy "Built-Like-A-Tank" design