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» Dual-layer hybrid analog/FM synth
» Authentic raw wave library from Elka Synthex and EK-44
» Expanded preset library (over 200 patches)

Synthox now includes a deep sampling of the rare Elka EK-44 FM synthesizer, an expanded patch library, and dramatically faster load-times.

⬇ Synthox 1.5 User Guide

Synthox 1.5

The raw analog power of the Elka Synthex returns in Synthox version 1.5, this time as a versatile hybrid Analog/FM workstation! Synthox features a dual-layer architecture which lets you freely mix raw waves from the Synthex and EK-44 for a wild new range of sonic possibilities. Both synths were fully serviced then deeply multi-sampled to give you a complete range of raw waveforms, noise oscillators and custom patches with the authentic hardware character.

Synthox 1.5 provides many easy-to-use modulation options via two arpeggiators (one per-layer), an LFO and a step modulator. Take full control over both layers waveshape, amplitude and filter envelopes as well as pitch, stereo and filter sections and a fast modwheel assignment system for versatile sound design and performance capabilities.

Synthox 1.5 also includes a large update to the factory preset library which now includes over 200 expertly designed patches. Loading time has been improved tremendously, increasing performance by as much as 70% thanks to recent improvements in the UVI Engine.

UVI Synthox GUI


A widely regarded and increasingly rare analog synthesizer, the Synthex (1981-1985), comes from Italian manufacturer Elka and was made famous in part by Jean Michel Jarre. The unique oscillator design and lush filters in this synth pack a distinctly thick and raw sound. As these machines become older finding working units has become increasingly difficult. Now, Synthox 1.5 brings you the very best of this instrument in a convenient and extraordinary sounding soft-synth.

Also included in Synthox 1.5 is a deep sampling of the Elka EK-44 (1986). A rare 4-operator FM synth based around Yamaha’s YM2203 chips, the EK-44’s raw digital sound palette makes a brilliant counterpoint to the Synthex and can lead to some truly unique sounds.

From thick and sizzling textures to funky analog tones, digital bells and everywhere in-between, Synthox 1.5 is a fantastic instrument for those looking to draw on the classic 80’s sound of Elka.

UVI Vintage Vault

Synthox 1.5 is also available in the Vintage Vault bundle

A comprehensive collection of 36 instruments giving you the most important synth, drum and sampler sounds from the last 50 years. Over 5,000 hand-crafted presets. The history of synthesis at your fingertips!

Simple, Flexible Authorization

License on your computer or iLok key, use your software on up to 3 devices concurrently

UVI | Authorization

* All trademarks copyright their respective owners. UVI is not affiliated or endorsed by any entities listed here.


  • Size : 1.7 GB (FLAC lossless encoding, was 3.6 GB in WAV)
  • Collection : Hybrid analog/FM synth
  • Content : 1 Instrument, 202 presets, 5,616 samples
  • Sample Resolution : 44.1 kHz. Recording at 96 kHz
  • Miscellaneous : Available as a free upgrade to existing Synthox, Vintage Legends, and Vintage Vault users

Product Manuals

Synthox User Guide 
UVI Workstation User Guide 

Technical Specifications

Supported Formats, Supported Operating Systems, Hard Drive, Requirements, Tested and Certified DAW : Check here

Installation Guide

Click here

George W

Studio owner and producer

I'm always looking for hard to find keys and you guys always come up with some good ones!

George Ware

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Dual-layer hybrid analog/FM synth packed with raw juju from the 80’s powerhouse Elka Synthex and Elka EK-44

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