Featuring independent trim on all sources and monitor outs, the Big Knob Studio Plus has mono, mute, and dim functions along with a flexible 2x4 USB recording interface. It is built with two combo XLR-1/4" Onyx mic inputs with phantom power for condenser microphones. Recording and playback is at 24-bit / 192 kHz resolution and the cue mix allows for controlled blending of direct inputs with other signals for zero-latency recordings. Choice of recording paths provides flexibility for applications like podcasting and more.

Additionally, other features include flexible source connections, a convenient 3.5mm input for your smartphone, dual headphone outputs with independent level control, a built-in talkback mic and external mic input, a footswitch input, and 16-segment input metering.

Finally, with its sturdy and built-like-a-tank design, the interface is compatible with all major DAWs on both Mac and Windows platforms. The Big Knob Studio Plus features a download for Waveform DAW and the DAW Essentials plug-in bundle.

Professional Source and Monitor Selection
Choose between four sources and three monitor pairs
Classic Big Knob volume control
Independent trim on all sources and monitor outs
Mono, mute, and dim functions
Flexible 2x4 USB Recording Interface
Two boutique-quality Onyx mic preamps including phantom power for condenser microphones
High-resolution 24-bit / 192 kHz recording and playback
Cue mix allows controlled blending of direct inputs with other signals for zero-latency recording
Comprehensive Feature Set for Professional Studios
Flexible source connections including convenient 3.5mm input for your smartphone
Dual headphone outs with independent level control
Built-in talkback mic and external talkback mic input for easy communication with artists
16-segment high-resolution input source metering
Professional Production Content
Waveform OEM professional software and the DAW Essentials Bundle for Waveform OEM, which includes 16 powerful plugins like Equalizer, Compressor, Reverber8, and Limiter

Mackie Big Knob Specs
Inputs 2 x Combo XLR-1/4" TRS Balanced/Unbalanced Mic/Line Inputs
4 x 1/4" TRS Balanced/Unbalanced Line Inputs
2 x 1/4" TRS Balanced/Unbalanced Cue Input
1 x 1/8" / 3.5 mm TRS Unbalanced Stereo Input
1 x 3-Pin XLR Talkback Mic Input
Outputs 2 x 1/4" TRS Balanced/Unbalanced 2-Track Line Outputs
6 x 1/4" TRS Balanced/Unbalanced Monitor Outputs
2 x 1/4" TRS Balanced/Unbalanced Monitor/Line Outputs
2 x 1/4" TRS Unbalanced Headphone Outputs
Footswitch Input 1 x 1/4" TRS
USB I/O 1 x USB 2.0 Type-B
Resolution 24-Bit / 192 kHz
Frequency Response 20 Hz to 20 kHz (±0.5 dB, Unity Gain, +4 dBu Input)
Noise Mic Inputs to Outputs: < -125 dBu RMS, A-Weighted (150 Ohms Terminated, 22 kHz Bandwidth)
Line Inputs to Outputs: < -90 dBu RMS, Unweighted (150 Ohms Terminated, 22 kHz Bandwidth)
THD + N <0.01% Unweighted (Unity Gain, 1 kHz at +4 dBu Input, 80 kHz Bandwidth)
Crosstalk < -60 dB at 1 kHz (Unity Gain, -1 dBFS Input)
Attenuation Muted: -60 dB
Dim: -20 dB
Maximum Input Level +22 dBu
Maximum Output Level +22 dBu
Power Requirements 100 to 240 VAC, 50/60 Hz, 0.75 A via Universal Power Supply
Dimensions 6.8 x 11.9 x 3.2" / 17.3 x 30.2 x 8.1 cm
Weight 4.6 lb / 2.1 kg