Used Mackie Big Knob Studio+ Volume Controller

Used Mackie Big Knob Studio+ in great condition—an all-in-one desktop monitor controller and USB-C audio interface for precise volume control and flexible routing. Features 2x2 USB recording/playback up to 24-bit/192kHz, two mic/line inputs with Onyx preamps, multiple monitor outputs with A/B switching, dedicated headphone output, and mono/dim/mute controls. Ideal for studios needing quick source selection, accurate monitoring, and clean conversion in a compact unit.