Used Mackie Big Knob Passive Volume Controller

Used Mackie Big Knob Passive Volume Controller in great condition—an easy, no-power-needed way to manage monitor level with clean, transparent control. This passive studio controller features a large master volume knob plus quick source and monitor selection, making it ideal for home or pro setups. Includes stereo I/O for connecting multiple sources and speaker pairs, and delivers smooth attenuation without adding noise or coloration. Perfect for precise monitoring and fast A/B comparisons.