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midiplus X4 mini 49-key MIDI Keyboard Controller

87 out of 100. Incorporating 125+ ratings and reviews.

The midiplus X4 mini is a portable and compact MIDI controller that has a simple design with the essential features needed for sequencing MIDI.

It features transport and 4 assignable encoders, octave buttons, LED display, pitch bend, and modulation touchable strips.


  • Keys: 49 force sensitive keys
  • Pads: None
  • Arpeggiator: None
  • Octaves: Not Specified
  • Bundled Software: None
  • Power: USB powered
  • Connectivity: USB, MIDI OUT, sustain pedal
  • Control Hardware Directly: No
  • Compatibility: USB Class Compliant
  • Dimensions: 27.68 x 5.39 x 2.01
  • Weight: 3.7 lbs.


With its sleek and simple design, many consider the x4 mini’s build quality to be outstanding, especially since its body is made out of metal. A number of users found the LED display useful for providing visual feedback for controls. When it comes to controls and parameters, its knobs rotate smoothly while its buttons have a tactile feel to them. It is also worth mentioning that setting up this controller is quite effortless, as attested to by many reviewers.


Some reports mention that its keys lacked velocity curve and some notice minor height differences.


This is a very practical and cost-effective mini keyboard controller that will make a great addition to anyone’s musical tool box, however there are more highly rated alternatives that we recommend in our guide to The Best 49 Key MIDI Controller Keyboards.

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