ESI Xkey 37 Air Bluetooth MIDI Keyboard Controller

ESI Xkey 37 Air is a Bluetooth MIDI keyboard controller designed for wireless music production and performance. It enables MIDI input with velocity sensitivity and polyphonic aftertouch for musicians working with software instruments on computers and mobile devices. This makes it ideal for studio, stage, and mobile workflows where cable-free operation is required.

The controller operates using Bluetooth low energy or a USB connection to transmit MIDI data. Performance input is managed through full-size keys and integrated pressure-sensitive controls that send continuous control information. Configuration and firmware updates are handled through companion software.

This keyboard supports portable setups with internal battery operation for wireless use. Its slim form factor allows transport alongside laptops or tablets. Broad software compatibility enables integration into varied production, learning, and performance environments.

Key Features

• 37 Full-Size Keys: Provides a three-octave keyboard with velocity-sensitive response
• Polyphonic Aftertouch: Supports pressure-sensitive control across multiple notes
• Bluetooth MIDI Connectivity: Enables wireless MIDI operation with compatible devices
• Integrated Performance Controls: Includes pitch bend, modulation, octave, and sustain buttons
• USB MIDI Support: Allows wired operation and charging through a USB connection

Technical Specifications

Keyboard
37 full-size keys (3 octaves)

MIDI Compliance
100% MIDI compliant

Key Response
Velocity sensitive
Polyphonic aftertouch

Performance Controls
Pressure sensitive pitch bend and modulation buttons with continuous MIDI control data
Octave +/- push buttons
Sustain button

Connectivity
Bluetooth low energy 4.0
Micro USB connector

Power
USB powered
No external power supply needed

Battery Performance
Nearly 10 hours of Bluetooth playing time on a full charge
Charging time: 2 hours

Power Consumption
125 mW / 25 mA

What's in the Box

(1) ESI Xkey 37 Air Bluetooth MIDI Keyboard Controller