Keith McMillen Instruments
K-MIX
K-Mix is a portable, programmable mixer, and high-quality USB audio interface, with an advanced touch sensitive control surface complete with on-board digital effects.


Keith McMillen Products
- MODEL NUMBER
K-737
K-Mix is a portable, programmable mixer, high-quality USB audio interface, and advanced touch sensitive control surface complete with on board digital effects. K-Mix is an unbreakable, 8-in/10-out programmable mixer and audio interface. K-Mix features 2 ultra-accurate, high-efficiency low noise µPre preamps, and a precision opto-tactile control surface designed from the ground up for an unprecedented level of control. We've made super clean audio more accessible, so you can focus on the music. K-Mix is a go-anywhere, fully-programmable, audio multi-tool that can meet all your needs, whether you're in the studio or on the road. With no moving parts, K-Mix can be transported in a backpack without the fear of snapping off a fader or knob, while still giving you unrivaled audio quality, mixer functionality, and control.
The software editor and windows driver for the K-Mix are available for download at https://pearl-electronics-support.com/
8-in / 10-out Audio Interface
2 Ultra-low Noise µPre Preamps.
Standalone Mixing doesn't require computer.
Onboard DSP- Gate, Compression, EQ, Reverb, Surround Panning.
USB Bus Powered.
Compatible with MacOS and Windows.
Specs
INPUT CHANNELS | OUTPUT CHANNELS | BIT DEPTH | SAMPLE RATES | INTERNAL LATENCY |
---|---|---|---|---|
8 Balanced Inputs | 10 Outputs (8 balanced) | 24-bit AKM Converters | 44.1kHz, 48kHz, 88.2kHz, 96kHz | ~2.5ms |
Signals up to +28dBu | 110dB dynamic range |
ANALOG INPUTS | ANALOG OUTUTS | DIGITAL |
---|---|---|
XLR/TRS combo jacks: - XLR Mic/Line Inputs (balanced) - Hi-Z Inst/Line 1/4” TRS Inputs (balanced) | 8 1/4” TRS Connectors (balanced) | 1 Micro-USB (Audio I/O, MIDI I/O, Power |
6 1/4” TRS Connectors (line/phono, balanced) | 1 stereo 3.5mm TRS headphone output | 1 Mini-USB (Power, Expander MIDI) |
< 50 Ohms output impedance | ||
+2.6dBV max output level |
FADERS | ROTARIES | BUTTONS |
---|---|---|
8 channel faders (75mm) | 4 rotary controls (360°) | Channel Select Buttons |
12 LED indicators per channel fader | 16 LEDs per rotary | 4 Bank Select Buttons |
1 master fader with 24 LEDs | MIDI position CC output on all rotaries | 17 Function Buttons |
MIDI position CC output on all faders | MIDI note output on all buttons |
NUMBER | PHANTOM POWER | GAIN | THD + NOISE | EIN | FREQUENCY RESPONSE |
---|---|---|---|---|---|
2 ultra low-noise µPre™ mic pres | +48V or +12V phantom power | +60db additional gain | - 105.12 dBu @ 0dB gain, 20Hz–20kHz (unweighted) -116.49 dBu @ 0dB gain, 20Hz–20kHz (A weighted) | -127.0 dBu, 150ohms @ 20Hz–20kHz, max gain (unweighted) | ± 0.03dB @ 20Hz–20kHz (44.1kHz, unweighted) ± 0.15dB @ 20Hz–40kHz (96kHz, unweighted) |
EQUALIZATION | COMPRESSOR | GATE | REVERB | SURROUND |
---|---|---|---|---|
3-band semi-parametric EQ ±18dB cut/boost | Compressor/Limiter on each channel Adjustable threshold, attack, release, and makeup gain | Noise gate on each channel Adjustable threshold, attack, release, and gain reduction | Master reverb with individual sends per channel | Quadraphonic, 5.1, 7.1, and Octophonic surround output Each channel assignable to one of four surround panners Optional bass management crossover |
Downloads
Minimum System Requirements:
For Mac: Intel Core 2 Duo 2.3GHz (or greater), 100 MB free hard disk space, Mac OS 10.8 through 10.13
For Windows: 2.5 GHz processor (or greater), 4 GB RAM (or greater), USB 2.0 (or greater), 100 MB free hard disk space, Windows 7, 8, & 10 (64-bit only)
K-Mix Supporting Documents
K-Mix Editors
Mac OSX K-Mix Editor (18.91 MB)
Windows K-Mix Editor (26.59 MB)
*USB Audio Driver must be installed (restart is suggested) before using the K-Mix Editor on Windows