Passive studio monitor controller that provides two selectable stereo inputs and two selectable stereo outputs and delivers professional level control, plus source and monitor selection for studios of any size. It allows for connecting two sets of inputs and easily switching between them, and supports two pairs of studio monitor speakers. It is equipped with passive electronics for ultra-low noise and maximum signal integrity, and large Volume knob for easy level adjustments. The controller also offers handy buttons for Mono, Mute and Dim functions and sturdy "built-like-a-tank" design.