ESI Xsynth – Ultra-Thin 25-Key Synthesizer with Master Keyboard & Audio/MIDI Interface

The Next-Generation Portable Synthesizer for Creators Everywhere

The ESI Xsynth is a cutting-edge 25-key synthesizer, audio interface, and MIDI controller – all packed into a sleek, ultra-thin aluminium body. Designed for musicians, producers, and performers on the move, it combines the best of ESI’s renowned controller expertise with a powerful digital synth engine.

Whether you’re producing in the studio, performing live, or creating on-the-go, the Xsynth delivers professional-grade sound, versatile connectivity, and a lightweight design that fits into your bag without compromise.

Why Choose the ESI Xsynth?

• 25 velocity-sensitive full-size keys with polyphonic aftertouch

• 3 oscillators, multimode filter, 3 LFOs, modulation matrix

• Integrated 24-bit / 96kHz audio interface for direct recording

• USB-C, MIDI I/O, headphone, aux in, line out

• Bundled with Bitwig Studio 8-Track, Cubasis LE & WaveLab Cast

Professional Synth Engine in a Compact Design

The Xsynth’s powerful engine offers up to 10 voices of polyphony with classic waveforms, experimental textures, and even field-recorded sounds. Add depth with filters, LFOs, envelopes, modulation matrix (16 slots), ring modulation, glide, and arpeggiator – everything you need to design rich, evolving sounds.

Professional Synth Engine in a Compact Design

The Xsynth’s powerful engine offers up to 10 voices of polyphony with classic waveforms, experimental textures, and even field-recorded sounds. Add depth with filters, LFOs, envelopes, modulation matrix (16 slots), ring modulation, glide, and arpeggiator – everything you need to design rich, evolving sounds.

Portable & Studio Ready

• Weight: only 634g – perfect for travelling musicians

• Dimensions: 387 × 148 × 27 mm – slim enough for backpacks

• Robust aluminium body ensures durability without bulk

• Bus-powered via USB-C – no external power required

From a home studio to a live stage, the Xsynth is plug & play with macOS, Windows, iPadOS, Linux, and Android.

Included Software Bundle

To help you get started immediately, the ESI Xsynth includes:

• • Bitwig Studio 8-Track – professional DAW for recording & sound design

  • Steinberg Cubasis LE – mobile sequencer for iOS

  • Steinberg WaveLab Cast – mastering and publishing software

Bitwig Studio 8-Track – the trim and effective DAW to start producing, performing, and designing sounds like a pro for use on up to eight tracks of audio / MIDI, incl. the Bitwig Essentials Package, a versatile selection of handpicked presets and sounds. Record instruments, create your arrangements, design new sounds, or just jam – every feature has been developed by musicians, for musicians!

Cubasis LE is the compact version of Steinberg‘s mobile multitouch sequencer, providing the same look and feel of its bigger brother Cubasis. Specially designed for quick and easy operation, Cubasis LE makes recording, editing and mixing a breeze, no matter where you are, right there on an iPhone or iPad when connecting Xkey.

Whether you are a hobby musician, home studio owner, freelancer or podcaster – WaveLab LE helps you to bring your music, voice and sound recordings to a more professional level. This easy-to-use mastering and audio editing software from Steinberg turns your computer with Xkey into an audio analysing, editing and publishing studio.