ESI ESI Xkey 37 37-Key Wireless Portable MIDI Keyboard Control… new

Brand

ESI

Category

Keyboards

Keyboards are versatile electronic instruments used for learning, songwriting, production and live performance. They range from simple, portable models with built-in sounds to more advanced instruments designed for studio and stage use. If you want an accessible way to explore music across many styles, keyboards offer flexibility, convenience and creative freedom.

Musical Instruments

Tags

37-Key

A 37-key instrument is a compact keyboard designed for portability and space-efficient setups. It provides enough range for melodies, bass lines, and chord work while remaining easy to transport and fit on a desk or small studio rig. For example, a 37-key synthesiser is often used for live performance or desktop production where quick access and minimal footprint are more important than a full keyboard range.

Key

Keyboard

Keyboard refers to electronic keyboards used for playing, composing, and performing music, ranging from simple digital keyboards to advanced synthesizer-based instruments. On SynthForSale, keyboards include instruments designed for studio production, live performance, and home use, often featuring velocity-sensitive keys, built-in sounds, MIDI connectivity, and integration with computers and other hardware. They are commonly used across electronic, pop, ambient, film, and experimental music, and can function as standalone instruments or as controllers for software and modular setups.

MIDI

MIDI is a digital control standard used to transmit performance and control data between electronic instruments, computers, and hardware devices. It carries information such as note data, velocity, timing, and parameter changes rather than audio, allowing instruments and software to communicate, stay in sync, and control each other. MIDI is fundamental to modern music production, sequencing, and live performance setups.

New

New Gear is unused and in original condition, supplied as it leaves the manufacturer. It is chosen for guaranteed reliability, full functionality, and the assurance of manufacturer support. For example, buying new ensures access to the latest design revisions, included accessories, and official warranty coverage.

Portable

Portable keyboards and pianos are lightweight, compact instruments designed for easy transport without sacrificing playability. They deliver a wide range of sounds, built-in features, and practice tools, making them popular with beginners, students, and travelling musicians.
Many models include battery operation, onboard speakers, and connectivity options, so you can play anywhere — at home, on stage, or on the move. Despite their smaller size, portable instruments often feature weighted or touch-sensitive keys for expressive playing.
Perfect for learning, rehearsing, or performing, portable keyboards and pianos combine convenience with versatility.