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Keith McMillen Instruments QuNexus Keyboard Controller (Red)

$199.00 to $217.00 Price Tier: Standard

1 Critic Review

0 wishlisted

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Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated January 16, 2026.

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$199.00

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$199.00

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$199.00

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5.0 (1)

$199.00

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4.5 (8)

$217.00

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Average Price: $203

Standard/Professional

$200

$501+

Price Tier

In the MIDI Keyboard Controllers category, Keith McMillen Instruments QuNexus Keyboard Controller (Red) is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Price History

Based on price data from 2 merchants for "Keith McMillen Instruments QuNexus Keyboard Controller (Red)". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unleash a new dimension of control in your music production with the Keith McMillen Instruments QuNexus Keyboard Controller. This compact and versatile controller, available in a vibrant red, isn't just another keyboard in the lineup. It's designed with the innovative musician in mind, featuring 25 Smart Sensor keys that respond to the pressure, location, and velocity of your playing, providing a whole new level of expressiveness.

The QuNexus controller is not just a MIDI controller; it also supports CV, OSC, and USB, making it a comprehensive control solution for your studio. Its built-in arpeggiator and step sequencer make it easier for you to sketch out ideas without having to dive into your DAW, while the illuminated, touch-sensitive keys provide valuable visual feedback during your performances.

The QuNexus stands out with its MPE-capability, allowing you to control MIDI Polyphonic Expression-capable instruments with ease. This feature, coupled with the controller's ability to recognize different pressure levels and key locations, allows for a wide range of control options that can transform your music creation process.

Key Features:

Multi-dimensional, MPE-capable, 25-key controller
Smart Sensor keys that recognize pressure, location, and velocity
Comprehensive control with CV, OSC, USB, and MIDI support
Built-in arpeggiator and step sequencer
Illuminated, touch-sensitive keys
Control MIDI, Control Voltage, OSC, and USB from a single device
Supports MPE for use with MIDI Polyphonic Expression-capable instruments
3-track step sequencer, and onboard arpeggiator with 10 play modes
Each sequencer track can be independently assigned to any output
QuNexus editor software for easy programming and custom configurations.

Product specs

Available since	December 2021
USB	Yes
Bluetooth	No
5-pole DIN MIDI	No
Ethernet	No
Pads	25
Diplay	No
Rotary Knobs	0
Fader(s)	0
Drawbar	No
Expansion	No

FAQs

Is the Keith McMillen Instruments QuNexus Keyboard Controller suitable for mobile music production?: Yes, the QuNexus is highly portable and lightweight, making it an excellent choice for mobile music production. It connects via USB, allowing for easy integration with laptops and tablets.
Does the QuNexus Keyboard Controller support polyphonic aftertouch?: Yes, the QuNexus supports polyphonic aftertouch, providing expressive control over each note, which is ideal for nuanced performances and dynamic sound manipulation.
How does the QuNexus integrate with modular synths?: The QuNexus features MIDI-CV functionality, allowing it to interface with modular synths. It provides pitch, gate, and three control voltage outputs, enabling seamless integration with analog gear.
Can the QuNexus Keyboard Controller be used with iOS devices?: Yes, the QuNexus can be used with iOS devices through a compatible USB adapter, making it versatile for various mobile setups.
What type of connectivity does the QuNexus offer?: The QuNexus offers USB connectivity for direct connection to computers and compatible devices but does not support Bluetooth or traditional 5-pin DIN MIDI connections.

Videos

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Muse Kinetics

QuNexus RED MPE Arpeggiator Demo

Muse Kinetics

New KMI Qunexus Red Review

tarekith

QuNexus RED Drum Sequencer and Bass Arpeggiator

Muse Kinetics

QuNexus RED MPE Sequencer meets Arturia Pigments Synth

Muse Kinetics

Reviews

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PROS

Expressive play with MPE-compatible software, offering acoustic-like expressivity
Rapid setup, MIDI compliant, and velocity-sensitive straight out of the box
Compact and portable, ideal for composition and limited space setups
Works well with a variety of instruments through GeoShred Pro app
Offers a unique tactile feedback experience, inviting more drum-like playing
Well-built with a range of features unexpected in its small form
Great value for entering MIDI and MPE music production
Good connectivity options for its size

CONS

Limited to only 4 presets, potentially restrictive for advanced use
Some users report a stiff and unresponsive key feel, demanding hard presses
Minor quality assurance issues reported, such as slight bends affecting button presses
Receives 2 CV inputs, not 3 as some users expected
Expressivity and touch sensitivity may require calibration and adaptation
The playing surface and the body may become sticky over time
Lack of iOS editor software for on-the-go adjustments

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Keith McMillen Instruments QuNexus Keyboard Controller (Red).

Build quality

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The QuNexus is noted for its exceptional durability and portability, making it ideal for travel and casual use in various environments.
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The QuNexus RED has received updates to its aesthetics and enclosure durability, implying a sturdier design compared to previous versions.
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Features and functionality

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The CV in/out is highly praised, offering excellent connectivity with hardware, while the pitch bend nub is often considered less effective.
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The QuNexus allows for individual key sensitivity adjustments through its editor, which can be particularly useful for personalized playability.
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The new 2.0 firmware introduces a 3-track step sequencer and arpeggiator, enhancing the QuNexus's capabilities significantly.
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User experience

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Users find the velocity response uneven, which can affect rhythmic performance, yet it's seen as suitable for non-velocity synth tasks.
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The sensitivity of the aftertouch and tilt functions may require damping for better control, as they can be overly responsive for some users.
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Use cases and applications

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It's popular among drummers for its resilience and adaptability, functioning well as a bassline synth or glitch controller.
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The QuNexus pairs effectively with iPads using native MPE apps, eliminating the need for a MIDI converter box, making it ideal for portable setups.
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Comparisons

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The QuNexus offers unique tilt functionality, but mastering it might not translate to other MIDI controllers due to its distinctiveness.
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The QuNexus has shorter keys, which can hinder those with piano muscle memory, unlike standard piano keys or the Akai drum pads for percussion tasks.
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For users not needing CV or sequencer functions, the K-Board C offers similar functionality to the QuNexus for MPE tasks.
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Value and pricing

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The MIDI Expander is highlighted as a cost-effective addition, especially when sourced from resale platforms.
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Software and compatibility

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The QuNexus editor software can be explored without connection to the device, aiding in understanding its features before purchase.
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The 2.0 firmware is backward compatible, allowing older QuNexus models to benefit from new features without needing to buy new hardware.
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Mods and upgrades

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A decal retrofit kit is available to update the silkscreen layout of older black QuNexus units to match the new firmware's interface.
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Critic Reviews

KMI K-Board-C & QuNexus RED

soundonsound.com

KMI's QuNexus RED dazzles with its compact design and advanced MPE capabilities, offering a vibrant array of features like a sequencer and arpeggiator. However, its pressure-sensitive keys might frustrate those seeking tactile feedback, and pitch control can feel imprecise. While it serves as a solid creative tool with ample connectivity options, the learning curve of its interface may deter some users. Overall, it's a fun and versatile addition to any studio setup, though it requires patience to fully master its quirks.

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