Used Mackie Big Knob Passive Volume Controller

Used Mackie Big Knob Passive Volume Controller in Good condition. This studio essential offers precise stereo level control with passive circuitry for ultra-clean audio—no power needed. Features include a large main volume knob, source-select switch (2x2 stereo), and mute/dim/mono functions for versatile monitor management. Ideal for home or professional studios seeking reliable, transparent sound control. Rugged metal construction ensures durability and long-term performance. Fully tested and functional, ready to integrate into your setup.