MACKIE Big Knob Passive 2x2 Studio monitor Controller audio path with switching for volume control, source selection, and mixing

Mackie Big Knob Passive is a passive 2X2 studio monitor controller that adds more monitoring options to your setup without needing power. That's why Big Knob Passive is the go-to tool for studios that need clean, simple monitor routing. Use the Mackie Big Knob Passive monitor switcher to move instantly between two pairs of monitors and two stereo sources. Featuring a classic Big Knob volume control and intuitive monitor switching controls, this controller couldn't be easier to use. In addition to the core routing features, Mackie Big Knob Passive also includes mono, mute and dim buttons for extra convenience. Mackie Big Knob Passive features no active circuitry, meaning it has the most pristine audio quality and maximum transparency possible in a monitor switcher.