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Everything In Music Since 1958
Everything In Music Since 1958

Keith McMillen QuNexus RED MPE MIDI-CV Mini Keyboard Controller

Original price $258.00
Original price $258.00 - Original price $258.00
Original price $258.00
Current price $199.00
$199.00 - $199.00
Current price $199.00
♫ In stock
About Inventory Status

Call or text us at 301-946-8808.

In stock: It is in stock and available to ship or pickup. Apparel must be shipped from another location and is not available for in-store pickup. We can usually ship or have these items available for pickup by the next business day if they don't require inspection, special handling, or setup. Our pickup location is 11151 Veirs Mill Rd. Silver Spring, MD 20902.

📆 Preorder: It is on the way to our warehouse. We can't predict when preorder items will arrive due to current supply chain issues. If you place an order for one of these items someone will contact you to estimate the delivery date.

Out of stock: We don't currently have it available but you're not out of luck yet. We still may be able to get it. If you order one of these items we will contact you with an estimated fulfillment date. You have the option to cancel the order if you change your mind.

Special order: The item is so special that it needs to be custom ordered for you. Some of these items are works of art and have to be made individually. Orders for special order items must be prepaid and we cannot accept cancellations or refunds.

█ Sold out: We don't think we can get this item because it was either discontinued by the manufacturer or was limited in quantity. If you want or need this item call or text us. Sometimes we can help you track down the item through other sources or help you find something similar.

About Item Conditions

Call or text us at 301-946-8808.

New: The item is brand new as received from the manufacturer with a full manufacturer warranty. Instruments such as guitars, snare drums, drum kits, brass and woodwind instruments may be opened for photography and quality control inspection and may not be in a factory sealed box.

Mint or Open Box: The item may have been opened and tested but has been repackaged. The original packaging may have superficial issues but the item itself and any originally included accessories are in perfect, like new condition.

Display Model: These items are so cool that we put them on display in our legendary shop. The condition is brand new as received from the manufacturer with manufacturer warranty. Rest assured, these items undergo a very careful inspection before shipping.

Demo: These items have been on our sales floor for demo purposes and will likely show signs of use. The original packaging may no longer be included, but you can be assured that you are receiving an awesome item and an awesome price.

Used: The item is used. These item may have varying degrees of wear. Please read the description for information about the condition of the item. Used items do not carry a warranty.

B or C Stock: Factory refurbished. These items were purchased from the manufacturer in a refurbished condition. They will show some cosmetic issues, but nothing that would impact performance. Being that these are sealed from the manufacturer, we generally do not open these to photograph the cosmetic issues. They are guaranteed to work and may have a limited warranty or you may purchase an extended warranty in some cases. Please see the listing description for item specific information.

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Quality and Flexibility - The Keith McMillen QuNexus RED MPE MIDI-CV Mini Keyboard Controller

QuNexus is a powerful MPE keyboard controller and three track arpeggiator/step sequencer. Its 25 touch-sensitive keys detect velocity, polyphonic aftertouch, and per-key tilt, giving you unprecedented control and musical expression. Each of the three arpeggiator/sequencer tracks can be programmed with up to 32 steps, 10 selectable arpeggiator patterns, and can be independently assigned to USB, MIDI, and Eurorack outputs. Blue and white LEDs illuminate the keys during arpeggiations, step sequences, and playback.

QuNexus can control MIDI hardware using the included MIDI Out cable or our optional MIDI Expander (sold separately). You can connect to modular synthesizers via the gate, three CV outputs, and two CV inputs, all of which can be assigned using the QuNexus editor which is compatible with Windows and MacOS.

25 Key MPE Keyboard Controller

  • Touch-sensitive keys detect velocity, polyphonic aftertouch, and per-key tilt
  • New key and pitch bend algorithm based on our K-Board Pro 4 gives superior playing and expression
  • User selectable and customizable velocity/expression curves and per-key sensitivity adjustment

Three Track Sequencer and Arpeggiator

  • Track are switchable between arpeggiator or step sequencer mode
  • Up to 32 quantized steps per pattern, 8 pattern slots to save and recall patterns
  • Playback divisions from whole notes to 32nd notes, dotted or triplets, 5-255 bpm
  • Arpeggiator supports 10 playback modes, including pendulum, random, and brownian motion
  • Each track is independently assignable to MIDI channels, USB/DIN and CV outputs
  • Track 1 supports MPE playback with each key transmitting aftertouch and tilt


  • USB MIDI with three ports (keyboard, expander, and CV)
  • MIDI DIN out using the included KMI MIDI Out Adapter Cable
  • MIDI DIN in and out using the optional KMI MIDI Expander (sold separately)
  • 1 Gate output, 3 CV output, and 2 CV inputs (using 1/8″ stereo trs connectors)

Control Layer and Programming

  • Separate control layer lets you map each key to its own notes and/or CCs
  • Standalone editing and saving of most common parameters
  • Advanced configuration using the QuNexus Editor
  • Compatible with MacOS and Windows


  • Power Consumption: ~150mA max draw at 5 V
  • Included Accessories: Micro-USB cable (1 m, USB 2.0)
  • Octave Shift Range: -2 to +3 octaves


  • Keyboard: 25 LED backlit keys with
  • pressure and tilt sensitivity
  • Pitch bend pad
  • Octave up/down buttons
  • 5 function buttons


  • 325mm x 84mm x 11mm
  • 2.8 in x 3.3 in x 0.43 in


  • 45g
  • 0.76lbs,/li>


  • Micro-USB
  • Mini-USB
  • 3 3.5mm TRS connectors (stereo)

Power Source

  • USB bus power
  • USB power supply (not included)

Velocity Curves

  • Linear
  • Logarithmic
  • Sine
  • Cosine
  • Exponential
  • Inverted
  • 2 Customizable User Curves

Data Transmitted

  • Class-compliant MIDI over USB
  • MIDI over 5-pin DIN (via KMI Expander)
  • Control Voltage

Control Voltage

  • Range Outputs: 0 V – 5.2 V
  • Inputs: 0V – 5.0 V

CV Pitch Output Modes

  • 1V per octave
  • 1.2V per octave
  • Hz per Volt

System Requirements (Mac)

  • Mac OS 10.5 or later
  • Intel Core 2 Duo processor or greater
  • 50 MB free hard disk space

System Requirements (Windows)

  • Windows 7 or greater
  • Intel Core 2 Duo processor or greater
  • 50 MB free hard disk space

Manufacturer: Keith McMillen
SKU: I691867-N-2-WHXA
UPC: 658580035624

We are Chuck Levin's Washington Music Center

Maryland, Virginia, and Washington DC's legendary music shop. Family-owned and operated since 1958. Buy gear the way it was meant to be bought, from a store that's been there through it all and has the vibe to prove it. We're staffed with musicians and industry experts, people that live and breathe music gear. Our mission is to help you find the right gear for your project, that thing that will bring you the most joy out of what you do. We're an authorized dealer for almost every brand, we stock items the other stores don't, so you can try before you buy. Stop by our Wheaton, MD showroom and see for yourself.

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