Keith McMillen Instruments K-Mix Professional Audio Interface, Digital Mixer & MIDI Control Surface

Keith McMillen Instruments K-Mix Professional Audio Interface, Digital Mixer & MIDI Control Surface

Keith McMillen Instruments K-Mix Professional Audio Interface, Digital Mixer & MIDI Control Surface

B&H # KEKMIX MFR # K-737
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Product Highlights

  • 24-Bit/96 kHz Audio Interface
  • Stand-Alone Digital Mixer
  • Low Noise, High Gain Micpre
  • Precision Opto-Tactile Control Surface
  • LED Backlit Faders and Rotary Controls
  • Fully Programmable MIDI Control Surface
  • 3-Band EQ and Dynamics for Each Channel
  • Dedicated Reverb w/ Individual Sends
  • Four to Eight Channel Surround Capable
  • No Moving Parts
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  • 1Description

The K-Mix from Keith McMillen Instruments is an 8 input, 10 output 24-bit/96 kHz audio interface, programmable digital mixer, and precision opto-tactile MIDI control surface designed for musicians in the studio or on stage.

The mixer features two accurate, low-noise μPre preamps providing up to 60 dB of gain with line and instrument level inputs available from the combo jacks. Each channel of the mixer offers a 3-band semi-parametric EQ, full dynamics including compression and gate, and a dedicated reverb with sends from each channel. Additionally, the mixer offers RIAA equalized phono inputs on channels 3 to 8, which allows for the connection of turntables without the need for a dedicated phono pre-amp.

The control surface accommodates up to 32 channels and all faders, rotary encoders, and buttons offer fully programmable MIDI outputs. The slim-line enclosure has no moving parts, making it ideal for the traveling performer. The K-Mix is USB bus-powered and ships with a 1A USB power supply, a 6' MiniB-USB cable, and a 3' MicroB-USB cable.

  • 8 analog inputs and 10 analog outputs with flexible routing options
  • Low-noise, high gain microphone preamp
  • High resolution audio interface: 24-bit/96 kHz
  • RIAA equalized inputs for direct connection of turntables
  • Precision opto-tactile control surface
  • Fully customizable and programmable MIDI control surface
  • 8x 3" / 75 mm 12-LED channel faders
  • 1x 3" / 75 mm 24-LED output bus fader
  • 4x 360 13-LED rotary controls
  • 9x channel select buttons
  • 4x bank select buttons
  • 17x function buttons
  • All rotary and fader controls transmit MIDI note and position CC messages
  • MIDI output on all buttons
  • Stand-alone digital mixer
  • Store and recall mixer presets
  • Semi-parametric 3-band EQ on each channel
  • Dynamics Processing: Compressor and gate on each channel
  • Dedicated reverb with individual sends on each channel
  • Each channel can be assigned to a 4-8 surround panner
  • No moving parts and slim-line construction for on-the-go portability
UPC: 013964759488
In the Box
Keith McMillen Instruments K-Mix Professional Audio Interface, Digital Mixer & MIDI Control Surface
  • Micro-B USB Cable (3')
  • Mini-B USB Cable (6')
  • USB Power Supply
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description
    Input Channels Balanced Inputs: 8, signals up to +28 dBu
    Output Channels Outputs: 10 (8 balanced)
    Bit Depth 24-bit AKM converters
    Sample Rate 44.1, 48, 88.2, and 96 kHz
    Analog Inputs 2x XLR/1/4" / 6.4 mm (TRS) combo jacks

    • XLR mic/line inputs (balanced)
    • 1/4" / 6.4 mm Hi-Z instrument/line (balanced)

    6x 1/4" / 6.4 mm TRS connectors (line level, balanced)

    Analog Outputs 8x 1/4" / 6.4 mm TRS connectors (balanced)
    Digital 1x Micro-USB (audio I/O, MIDI I/O, power)
    1x Mini-USB (MIDI I/O via KMI expander, power)
    Faders 8x channel faders (3.0" / 7.5 cm)
    12x LED indicators per channel fader
    1x master fader with 24 LEDs
    MIDI position CC output on all faders
    Rotary Encoder 4x rotary controls (360°)
    16x LEDs per rotary
    MIDI position CC output on all rotaries
    Buttons 9x channel select buttons
    4x bank select buttons
    17x function buttons
    MIDI note output on all buttons
    Mic Preamp
    Number 2x ultra low-noise μPre mic pres
    Phantom Power +48 V
    Gain +60 dB
    THD + N -107.6 dBu @ 0 dB gain, 20 Hz to 20 kHz (unweighted)
    -120.5 dBu @ 0 dB gain, 20 Hz to 20 kHz (A weighted)
    EIN -121.5 dBu, 150 ohms @ 20 Hz to 20 kHz, max gain (unweighted)
    Frequency Response ± 0.13dB @ 20 Hz to 20 kHz (44.1 kHz)
    ± 0.56dB @ 20 Hz to 40 kHz (96 kHz)
    Equalization 3-band semi-parametric EQ
    ±18 dB cut/boost
    Compressor Compressor/Limiter on each channel
    Adjustable threshold, attack, release, and makeup gain
    Gate Noise gate on each channel
    Adjustable threshold, attack, release, and gain reduction
    Reverb Master reverb with individual sends per channel
    Surround Quadraphonic, 5.1, 7.1, and Octophonic surround output
    Each channel assignable to one of four surround panners
    Physical Specifications
    Dimension 9.3 x 6.4 x 1.6" / 23.6 x 16.3 x 4.1 cm
    Weight Not Specified by Manufacturer
    Packaging Info
    Package Weight 3.85 lb
    Box Dimensions (LxWxH) 10.6 x 7.6 x 4.0"
    K-Mix Professional Audio Interface, Digital Mixer & MIDI Control Surface is rated 4.0 out of 5 by 1.
    Rated 4 out of 5 by from Innovative, interesting and musical piece. A win. Ive had my K-mix for about 5 months now and have used it nearly every day. I am an analog guy and am EXTREMELY hesitant to use knobless gear in the KM genre. Touch interfaces are just too intricate for me to trust. Nevertheless, I was attracted to the feature set of this unit and decided to take the plunge. In general Im extremely pleased: it works amazingly well, the sound quality is great and Im continually discovering new and musical ways to use the K-mix. When you buy a piece of KM gear you are buying two things: first, a killer piece of cutting edge hardware and second, a relationship with a team of engineers and musical pioneers who are incredibly passionate and competent in their highly specialized area of tech. Its not perfect, but what piece of gear is? The KM team lives on the cutting edge of innovation, so not only are they making brand new kinds of equipment you wont find anywhere else, but they are continually improving the functionality and interfaces of what they make. Ive had three interactions with customer service, and all were handled excellently in a friendly and professional way. (Try calling Roland or Gibson with any kind of issue. Actually... dont.) The KM tech responds in most cases on the same day with dedicated support. My issue was thoroughly solved in each case. (One call was about a really weird problem relating to a firmware update which nearly bricked the unit. We were on the verge of setting up a warranty replacement when the K-mix miraculously started working again. The issue hasnt popped up since. It was reassuring to know, however, that theyre not shy about replacing a piece if they need to.) In sum, Id like to HIGHLY recommend the KM product line and team. These folks are serving the creative community, which is a frustrating and often thankless pursuit! My hat is off to them. Buy their stuff, I will probably get more of their pieces in the future.
    Date published: 2017-02-17
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