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Average Price: $564
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$200
$1001+
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Based on price data from 2 merchants for "Keith McMillen Instruments K-Mix". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Keith McMillen Instruments K-Mix is your multi-faceted companion in both live and studio settings, offering a unique blend of audio interface, control surface, and programmable mixer functionalities. This compact, yet powerful device saves space without compromising on performance, providing you with an all-in-one solution for your audio mixing needs.
The K-Mix features two low-noise preamps, accessible through XLR/TRS combo jacks, and is capable of supplying 48V phantom power. This versatile mixer also provides six TRS line inputs, bringing the total to eight balanced inputs for handling a wide range of audio sources.
One of the standout features of the K-Mix is its multi-function, touch-sensitive strip faders and rotary controllers. These controls offer precise input power and are delightfully intuitive to use, adding a touch of finesse to your mixing experience. Coupled with onboard DSP that includes Compressor/Limiter, Gate, Pan, and EQ, the K-Mix caters to the demands of professional audio mixing.
For those looking to experiment with surround sound, the K-Mix supports 5.1, 7.1, and Octo playback, allowing you to create immersive audio landscapes. With its wide range of features and user-friendly design, the Keith McMillen Instruments K-Mix is a reliable partner for any audio professional.
Key Features:
- Audio interface, control surface, and programmable mixer in one compact unit.
- Two low-noise preamps with XLR/TRS combo jacks, capable of supplying 48V phantom power.
- Six TRS line inputs for a total of eight balanced inputs.
- Multi-function, touch-sensitive strip faders and rotary controllers.
- Onboard DSP includes Compressor/Limiter, Gate, Pan, EQ.
- Supports 5.1, 7.1, and Octo surround sound mixing.
Product specs
| Brand | Keith McMillen Instruments |
| Model | K-Mix Performance Mixer |
| Finish | Black |
| Year | 2010s |
| Categories | Audio Interfaces |
| Bit Depth | 24-bit |
| Bus-Powered | Yes |
| Compatibility | Windows, macOS |
| Computer Connectivity | USB |
| Electronics | Analog, Digital, Solid State |
| Format | Desktop Standalone |
| Number of Analog Inputs | 8 |
| Number of Analog Outputs | 8 |
| Number of Channels | 16 |
| Number of Digital Inputs | 0 |
| Number of Digital Outputs | 0 |
| Number of Headphone Outputs | 1 |
| Number of MIDI Inputs | 0 |
| Number of MIDI Outputs | 0 |
| Number of Mic Preamps | 2 |
| Sample Rate | 96 khz |
| Simultaneous I/O | 8 x 8 |
FAQs
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Is the Keith McMillen Instruments K-Mix compatible with both Windows and macOS systems?
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Yes, the K-Mix is compatible with both Windows and macOS, making it versatile for different studio setups.
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How many channels does the K-Mix offer for simultaneous input and output?
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The K-Mix provides 8 x 8 simultaneous input and output channels, allowing for comprehensive audio routing in your setup.
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Does the K-Mix require an external power supply, or is it bus-powered?
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The K-Mix is bus-powered, meaning it draws power directly from your computer via USB, eliminating the need for an external power supply.
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What is the sample rate and bit depth of the K-Mix?
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The K-Mix supports a sample rate of up to 96 kHz and a bit depth of 24-bit, ensuring high-quality audio performance.
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How many mic preamps are included in the K-Mix, and are they suitable for professional recording?
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The K-Mix includes 2 mic preamps, which are designed to deliver clean and clear audio, suitable for professional recording applications.
Videos
sonicstate
Keith McMillen K-MIX - SonicLAB Review
Reviews
PROS
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Great clean sound quality enhances audio projects
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Intuitive software/hardware integration for easy use
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Highly flexible, replacing multiple gear pieces
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Durable design with no moving parts, less prone to break
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Touch controls provide a unique, quality feel
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Compatible with laptop and iOS devices for versatile setups
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Onboard effects add to the creative toolkit
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Easy to save and switch between presets for various uses
CONS
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Soft-touch plastic may deteriorate into a sticky mess
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Master output levels limited, potentially underwhelming
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Touch controls require an adjustment period, not for everyone
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Keith McMillen Instruments K-Mix.
Features and functionality
Software and compatibility
User experience
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Owners note that the customer service can be unresponsive, particularly with hardware issues like uneven output levels on specific channels.
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The touch faders on the K-Mix feature a VU display directly on the fader, which is appreciated for its utility, though the rubbery feel may not suit everyone.
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Comparisons
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The Roland MX-1 is frequently chosen as an alternative, praised for its USB inputs and compatibility with other Roland gear.
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Some users have switched from Apogee interfaces to the K-Mix, citing comparable preamp quality and additional functionality like DSP standalone and programmable MIDI.
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The K-Mix offers 8 assignable 1/4" outputs, which are highlighted as a significant advantage over competitors like the Presonus StudioLive AR series.
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Other
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The K-Mix has been used in professional film settings, indicating its utility in small, portable setups despite mixed reliability reports.
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Build quality
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The K-Mix is noted for its robust build and durability, with users highlighting it as nearly indestructible, similar to other Keith McMillen Instruments products.
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4.0 out of 5
Based on 0 Reviews and 4 Ratings
Artist usage
Add artist
Snipes and Hutson discuss their use of the K-Mix in this article from the Keith McMillen website: "What I love is how incredibly versatile it is. Occasionally we show up in a new environment and we’re like “Oh, we need to submix this that we don’t usually need to submix” and it’s like “Oh cool, I’ll just do that in a new layer and I’ll just spit you out this” and it’s like “Done!” And it’s so fast and so easy to do stuff like that. And it sounds really good. And it’s indestructible. So those are all really important things for the road."
Trey Gunn is listed on Keith McMillen Artists page. He is quoted for using the 12 Step, Soft Step and K-Mix.
Featured in this March 5, 2019 Instagram post.
The @keithmcmilleninstruments #boppad and #kmix sure make life easy. I generally hate dealing with anything electronic related but goddamn if this stuff feels amazing, looks cool, sounds great and couldn’t be easier to plug/play. Thanks @zonana_music for the K Mix. #adrianbelewtour #tour #drums #drummer
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Keith McMillen Instruments K-Mix, it is most commonly used with the following gear.
Community setups
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