Mackie Big Knob Studio is a monitor controller that can switch three stereo sources to two pairs of monitors. On the other hand, it can also be used as an audio interface, featuring top-notch Onyx™ PreAmps and 96-kHz/24-bit converters. Thanks to its sophisticated features like the built-in talkback microphone and the extra input for smartphones, the Big Knob Studio is a compact solution for any studio.