Elka Synthex
A rare Italian 8-voice analog polyphonic synthesizer with DCOs, built-in sequencer, and factory MIDI in on the MK2 version
Overview
The Elka Synthex is a polyphonic analog synthesizer produced by Italian manufacturer Elka from 1981 to 1985. Developed by independent Italian designer Mario Maggi, it features 8-voice polyphony and 4-part timbrality, making it capable of complex layered sounds. Only 1850 units were ever produced, contributing to its rarity. The MK2 version includes factory-installed MIDI in, with two tracks capable of outputting MIDI data. It has a 61-key keyboard and extensive hands-on control with 36 knobs and 84 buttons.
Specifications
| Product type | polyphonic analog synthesizer |
| Production years | 1981 to 1985 |
| Original price | £2,500 including VAT |
| Units produced | 1850 |
| Polyphony | 8 |
| Timbrality | 4 |
| Oscillators | 2 per voice (16 DCOs total) |
| Keyboard | 61 keys |
| Controls | 36 knobs, 84 buttons |
| Dimensions | 1095x500x165mm |
| MIDI | Built in factory MIDI in (MK2 version); two tracks can output MIDI data |
| Sequencer | Built-in sequencer |
Design
The Elka Synthex is an analog polyphonic-structured synthesizer featuring stable digital-controlled oscillators (DCOs). The MK2 version includes updated circuitry with factory-installed MIDI capability. Recalibration of oscillators focuses on board number 5840, located at the bottom of the 4-board stack. Schematic diagrams are available, including "Elka Synthex Schematic.pdf" from manuals.fdiskc.com.
Context
The Elka Synthex was developed by independent Italian designer Mario Maggi and produced during the early 1980s, a period of rapid innovation in synthesizer technology. In June 2024, Behringer announced plans to clone the Synthex, citing its 1981 origin. Cherry Audio also released a software emulation called Elka-X, preserving the synth’s character with modern updates.
Market
As of 2026, Elka Synthex units sell for between 9,000 and 14,000 Euros, down from earlier peaks near 18,000. Original RAM memories are difficult to find, and service information is limited, though oscillator recalibration procedures reference board number 5840. The original schematic is available online, aiding restoration efforts.
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