Used Mackie Big Knob Passive Volume Controller

Take command of your monitoring with this Used Mackie Big Knob Passive Volume Controller in excellent condition. Its fully passive design means no power required and a clean, transparent signal path for precise level control. Features include a large master volume knob, source selection, monitor A/B switching, mono and mute functions, plus dedicated headphone level control. Ideal for studios needing reliable, hands-on monitoring control between interfaces, mixers, and powered speakers.