---
product_id: 644455218
title: "ESI Xkey 37 | Ultra-Thin 37-key USB MIDI Controller Keyboard"
brand: "esi"
price: "€ 553.34"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/644455218-esi-xkey-37-ultra-thin-37-key-usb-midi-controller
store_origin: PT
region: Portugal
---

# Velocity-sensitive & polyphonic aftertouch 37 full-size keys, 3 octaves USB-C + 5-pin DIN MIDI output ESI Xkey 37 | Ultra-Thin 37-key USB MIDI Controller Keyboard

**Brand:** esi
**Price:** € 553.34
**Availability:** ✅ In Stock

## Summary

> 🎶 Slim, smart, and seriously expressive — your ultimate portable MIDI powerhouse!

## Quick Answers

- **What is this?** ESI Xkey 37 | Ultra-Thin 37-key USB MIDI Controller Keyboard by esi
- **How much does it cost?** € 553.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/644455218-esi-xkey-37-ultra-thin-37-key-usb-midi-controller)

## Best For

- esi enthusiasts

## Why This Product

- Trusted esi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Power:** USB bus-powered—no bulky adapters, just pure musical flow
- • **Smart Button Suite:** Pressure-sensitive smart buttons, pitch bend, modulation & octave controls at your fingertips
- • **Versatile Connectivity:** USB-C powered with included Xcable adapter for classic MIDI gear integration
- • **Ultra-thin Aluminum Body:** Sleek, lightweight design perfect for on-the-go creativity
- • **Expressive Touch Controls:** Velocity-sensitive keys with polyphonic aftertouch for dynamic performance

## Overview

The ESI Xkey 37 is a premium ultra-thin MIDI controller featuring 37 full-size velocity-sensitive keys with polyphonic aftertouch, housed in a durable aluminum body. It connects seamlessly via USB-C and includes an Xcable adapter for 5-pin DIN MIDI and pedal inputs, making it ideal for both modern and classic setups. Lightweight and bus-powered, it offers professional-grade control with smart buttons, pitch/modulation wheels, and octave shifting, perfect for musicians and producers seeking portability without compromise.

## Description

Buy ESI Xkey 37 | Ultra-Thin 37-key USB MIDI Controller Keyboard. Free delivery and returns on eligible orders.

## Features

- MIDI controller with 37 full size keys (3 octaves) with USB-C connection
- aluminum body
- velocity sensitive keys
- polyphonic aftertouch
- pressure sensitive smart buttons
- pitch bend and modulation buttons
- octave +/- buttons
- sustain button
- included Xcable adapter adds a 5-pin DIN MIDI output and 1/4" connectors for Expression and Sustain pedals
- USB bus powered, no AC adapter is needed

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7PTZLNZ |
| Best Sellers Rank | 42,979 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 190 in MIDI Controller |
| Brand Name | ESI |
| Colour | silver |
| Compatible Devices | Laptop |
| Connectivity Technology | USB |
| Connector Type | USB-C, 5-pin DIN MIDI |
| Control Method | Touch |
| Control Type | Keyboard Controller |
| Customer Reviews | 4.2 4.2 out of 5 stars (26) |
| Hardware Interface | USB Type C |
| Hardware Platform | [LIKELY] x86 |
| Human Interface Input | Keyboard |
| Included Components | USB Cable, Xcable adapter for 5-pin DIN MIDI and 6.3 mm sockets for expression and sustain pedals |
| Instrument | Keyboard |
| Instrument Key | Any |
| Item Dimensions D x W x H | 55.4D x 13.5W x 1.6H centimetres |
| Item Weight | 880 Grams |
| Keyboard Description | 37 keys, 3-octave, slim, aluminum body, MIDI controller keyboard with touch-sensitive keys, polyphonic aftertouch and additional function keys |
| Manufacturer | ESI |
| Manufacturer Contact Information | ESI |
| Manufacturer Part Number | XKEY-37 |
| Material Type | Aluminium |
| Model Name | XKEY-37 |
| Model Number | xkey 37 USB-C |
| Model Year | 2024 |
| Noise Control | None |
| Number of Items | 1 |
| Number of Keys | 37 |
| Outer Material | Aluminium |
| Platform | Windows, iOS |
| Product Style | Minimal |
| Product Warranty | 2 years. |
| Size | 37 Tasten |
| Special Features | Velocity-sensitive buttons with real polyphonic aftertouch, pressure-sensitive smart buttons |
| Supported Software | [ALL] MIDI-compatible apps and MIDI-enabled DAWs |
| Total USB 2.0 Ports | 1 |
| Total USB Ports | 1 |
| Unit Count | 37.0 count |

## Product Details

- **Brand:** ESI
- **Connectivity technology:** USB
- **Model name:** XKEY-37
- **Number of keys:** 37
- **Special feature:** Velocity-sensitive buttons with real polyphonic aftertouch, pressure-sensitive smart buttons

## Images

![ESI Xkey 37 | Ultra-Thin 37-key USB MIDI Controller Keyboard - Image 1](https://m.media-amazon.com/images/I/514lY1JSLkL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- ESI Xkey 37 Ultra Slim USB MIDI Keyboard with 37 Keys
- Akai Professional MPK Mini Plus - 37 Key USB MIDI Keyboard Controller for Mac and PC with 8 RGB MPC Pads, Rotary Knobs, and Music Production Software Black

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**Shop now:** [https://www.desertcart.pt/products/644455218-esi-xkey-37-ultra-thin-37-key-usb-midi-controller](https://www.desertcart.pt/products/644455218-esi-xkey-37-ultra-thin-37-key-usb-midi-controller)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-09-27*