ESI Xkey 37

Professional music gear - detailed information and where to buy

ESI Xkey 37

ESI

Xkey 37

4.4 (15 reviews)

Product Info

Article Number: 613299
Brand: ESI
Model: Xkey 37
Price: $244.20

* Prices may vary. Check retailer for current pricing and availability.

The ESI Xkey 37 is a seriously cool-looking controller – the aluminum housing really elevates the aesthetic. It's perfect for producers and electronic musicians who prioritize portability and a minimalist workflow. While it lacks tactile feedback, the aftertouch offers surprising expressive potential for the price.

Product Description

  • ESI Xkey 37
  • USB-C Controller Keyboard
  • Ultra-flat
  • elegant aluminium housing
  • 37 velocity-sensitive keys and polyphonic aftertouch
  • Two pitch bend buttons
  • Modulation button
  • Two octave buttons (+/-)
  • Sustain button
  • Class Compliant – immediately recognised without driver installation
  • Dimensions: 388 x 135 x 16mm
  • Weight: 600 g
  • Colour: Silver
  • Includes USB-C cable and breakout cable for sustain pedal and MIDI
PROS
  • • Sleek, minimalist design with a genuinely premium aluminum chassis feels substantial.
  • • Velocity-sensitive keys offer surprisingly expressive performance despite their thin profile.
  • • Polyphonic aftertouch adds a layer of nuance rarely found at this price point.
  • • Class-compliant USB-C connectivity simplifies setup and eliminates driver headaches.
CONS
  • • Ultra-flat key design lacks the tactile feedback preferred by experienced keyboardists.
  • • Limited physical controls restrict advanced parameter manipulation without software.
  • • Lightweight build, while portable, can feel somewhat flimsy during energetic playing.

Key Features

Keys 37
Key Type Velocity-Sensitive, Ultra-flat
Pads None
Knobs/Faders None
Connections USB-C, Sustain Pedal (Breakout Cable), MIDI (Breakout Cable)
Weight 600g

Similar Products

Casio AP-750 WE - General Digital Pianos

Casio AP-750 WE

General Digital Pianos

$2,144
Digital Piano, 88 Weighted keys with hammer action (Smart Hybrid Hammer Action, hybrid material made...
Dimensions (W x D x H): 1401 x 440 x 929 mm
Weight: 53.6 kg
4.9 (50 reviews)
Tobinski LFOs - LFO Modules

Tobinski LFOs

LFO Modules

$373
Eurorack Module, Dual LFO with extensive modulation options, 16 selectable waveforms per LFO (sawtooth,...
4.5 (41 reviews)
NANO Modules ST-IN - Interface Modules

NANO Modules ST-IN

Interface Modules

$149
Eurorack Module, Stereo input module and preamp for line signals, Gain control (+30 dB) and tilt...
4.8 (28 reviews)
Casio AP-750 BN - General Digital Pianos

Casio AP-750 BN

General Digital Pianos

$2,144
Digital Piano, 88 Weighted keys with hammer action (Smart Hybrid Hammer Action, hybrid material made...
Dimensions (W x D x H): 1401 x 440 x 929 mm
Weight: 53.6 kg
4.5 (28 reviews)
Manuel Rodriguez Superior Flamenco Sabicas C3-F - Flamenco Guitars

Manuel Rodriguez Superior Flamenco Sabicas C3-F

Flamenco Guitars

$957
Flamenco Guitar, Top: Solid European Carpathian spruce, Back and...
4.8 (19 reviews)
Behringer WING Compact Flyht Pro Bundle - Digital Mixers

Behringer WING Compact Flyht Pro Bundle

Digital Mixers

$2,748
Dimensions (W x H x D): 453 x 225 x 574 mm
Weight: 15.9 kg
4.8 (6 reviews)
Ibanez GRG320FA-TVT - ST Style Guitars

Ibanez GRG320FA-TVT

ST Style Guitars

$439
Electric Guitar, Body: Poplar, Top: Basswood with Art Grain in flamed maple look, Bolt-on neck:...
4.5 (24 reviews)
Applause Jump Dark Matter - Other Acoustic Guitars

Applause Jump Dark Matter

Other Acoustic Guitars

$362
Acoustic Guitar with Pickup, Type: OM with cutaway, Top: Solid European spruce, Back and...
4.5 (11 reviews)

Frequently Asked Questions

It's essentially synth-action – very light and shallow, lacking the resistance of weighted keys. Don't expect a piano-like feel.
No, it requires a host device (computer, tablet) to function; it's a class-compliant controller and doesn't have onboard sounds or a MIDI port for direct connection to other hardware.
While generally consistent, there's a subtle variation in aftertouch sensitivity between the lower and higher octaves – something to be aware of when programming.

We use cookies to improve your experience. Learn more