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Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer , this item is no longer available, below are some similar products you may be interested in.

Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer

8-in/10-out USB Audio Interface/Control Surface with 2 Microphone Preamplifiers, Touch Controls, and Onboard Processing - Mac
Item ID: KMix
Sorry, the Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer is no longer available. We've left this page up for reference only.
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Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer
Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer
Keith McMillen Instruments K-Mix USB Audio Interface & Performance Mixer

A Perfect Mixer for Live Performance

This article was Written By

Our Product Research Team

Get to know them!

If you're going to perform live with a mixer, then you need something that handles like an instrument, and the Keith McMillen Instruments K-Mix is perfect for the job. This combination 8-in/10-out USB audio interface, touch-sensitive control surface, and standalone mixer puts premium sound quality and astonishingly flexible MIDI control in the center of your rig. High-quality, low-noise preamps? The K-Mix has two of them. How about processing and effects? From EQ to dynamics and even reverb, it's all there. And since there are no moving parts onboard the K-Mix, you can count on this control surface/interface to travel well and provide a lifetime of flawless performance.

Keith McMillen Instruments K-Mix Performance Mixer/Interface at a Glance:
  • Virtually indestructible yet incredibly playable
  • Excellent preamps and connectivity options
  • DSP delivers onboard tone shaping power
Virtually indestructible yet incredibly playable

With its array of LED-backlit touch strips, buttons, and rotary zones, the K-Mix hardly resembles a conventional mixer or control surface, yet these tactile controls not only cover all of the functions you want to have on hand, they're far more responsive than traditional mechanical knobs and faders. For instance, you can jump between fader levels just by tapping on different locations on a touch strip, and sliding your finger on the rotary control zones is quicker than twisting a knob. And, since all control values are reflected by underlying LEDs, jumping from function to function is instant. What's more, these controls are virtually indestructible, so you can comfortably toss the K-Mix in your bag and go, without worrying about faders falling off or knobs caving in the PCB below.

Excellent preamps and connectivity options

The connectivity packed into the K-Mix doesn't just sound great, it's incredibly flexible too. For starters, all of the audio I/O on the K-Mix is on balanced 1/4" TRS jacks, with the exception of the two muPre microphone preamplifiers, which feature combo jacks. These extraordinarily low-noise preamps offer full +48V phantom power and up to 60dB of gain, plus they include hi-Z instrument-level direct inputs as well. On the digital side, 24-bit AKM converters capable of up to 96kHz sample rates ensure that your sound remains pristine throughout processing, recording, or computer playback. What really caught the attention of the performing artists here at Sweetwater is that the K-Mix's full 8-in/10-out I/O is available without hooking it up to a computer, so you can leave your laptop at home and still take advantage of it extensive routing and processing options.

DSP delivers onboard tone shaping power

Whether you're using it along with your DAW or in standalone mixer mode, the DSP processing onboard Keith McMillen Instruments' K-Mixgives you a whole lot of extra mileage out of your sound sources. For instance, each channel includes a 3-band semi-parametric EQ with up to 18dB of boost or cut per band. Fully adjustable compressor/limiters allow you to smooth out or punch up your sounds, and you can gate out noise if you need to. On top of that, there's a rich master reverb effect onboard, with dedicated sends for each channel. And, for added versatility on stage and in the studio, the K-Mix also includes four onboard surround-sound processing modes, which turn each of the rotary zones into surround panners.

Keith McMillen Instruments K-Mix Performance Mixer/Interface Features:
  • A unique touch-controlled USB audio interface, MIDI control surface, and standalone mixer
  • Versatile I/O includes a pair of muPre preamps plus 6 additional inputs and 10 outputs
  • High-quality 24-bit AKM converters provide up to 96kHz resolution digital audio
  • Tactile MIDI controls includes 8 touch-strip faders, 4 rotary controls, and 30 buttons
  • Lack of moving parts makes this an ideal part of your mobile music-performance rig
  • Onboard DSP includes EQ, dynamics, reverb, and 4 surround-sound mixing modes
  • All I/O, routing, and onboard DSP functions fully accessible in standalone mixer mode
Take total control of your music rig with a Keith McMillen Instruments K-Mix!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.