Mackie Big Knob Studio Command System is a basic but powerful desktop audio control center. It lets musicians and engineers get right to work making music in 4 different ways: level control, studio monitor selection, input source selection, and talkback and headphone control. Precise Level Control The large convenient volume knob lets you adjust volume levels the way our ancient audio ancestors did with a basic knob and not with a mouse and screen. This results in greater precision and a faster level adjustments. Monitor Selection When it comes to mixing, professionals know it's best to have a second and third opinion. So the Big Knob lets you quickly switch from 3 pairs of studio monitors. The 2 studio monitors and a subwoofer or studio monitors and a home stereo even between any other combination of powered speakers. Source Selection Now for the input . The Big Knob will allow you connect up to 4 stereo input sources at one time. witch means you can simultaneously connect to your computer/DAW outputs, CD player, cassette deck, and even a turntable when using the premium onboard RIAA preamp. You can even connect keyboards, guitars, drum machines, samplers or anything you choose through your monitors. This makes Big Knob perfect for comparing your mixes in progress to your favorite CDs, for archiving your old LPs, rockin along to your favorite tune, and tons more. Talkback Section and Headphone Control The Mackie Big Knob Studio Command System has a built-in talkback mic and spring-loaded activation switches. The Big Knob lets you quickly communicate with musicians in both the studio and tracking room. Forget the hand signals through the glass! This Mackie Big Knob Studio Command System has 2 high-powered headphone outputs with a discrete headphone mix bus, solving the communications needs of most computer-based studios. All the Right Connections The shiny silver knob is a head-turning feature! The Mackie Big Knob Studio Command System has a rear panel is equally impressive. With the 3 distinct Monitor outputs with individual level control, 2-Track A and 2-Track B stereo outputs with level selection switches, a DAW stereo output for your computer, a Studio output with level control, a Phones Mix input with level selection switch, 2-Track A and 2-Track B Stereo Source inputs with level control, a DAW Mix input from your computer with level control, and even a Phono input with level control for direct connection to your turntable. Sound Quality Since the Mackie Big Knob Studio Command System plays a crucial link between recording output(s) and studio monitors. Mackie has placed the utmost importance and no-compromise sound quality. Big Knob features ultra low-noise op amps, extremely low-tolerance components and state-of-the-art surface mount technology. All of this ensures superb sound in critical listening environments and long-term reliability - even under daily, and nightly, studio use. ApplicationsBig Knob is perfectly suited to a range of applications beyond desktop music making, including home stereo systems, keyboard/guitar rigs, high-end multimedia systems, archiving LPs to CD, classrooms and boardrooms, and more. Features -Tabletop level control/monitor switcher/source selector & talkback box -Big convenient volume knob for precise level adjustments -Switches among 3 sets of studio monitors -Built-in talkback microphone eases communication -Monitor 4 independent stereo inputs including one for your DAW Mix -Dual headphone outputs with independent volume controls and headphone mix bus -Phono preamp for direct turntable connection -High-end studio sound quality and robust construction -Perfect for computer-based studios.