At €11,995, the 4EXP from Miltone targets a narrow audience: owners of an Oberheim Four Voice who want to expand to eight voices, or anyone who wants four SEM-based voices in expander format without the original hardware. Pre-orders are open now.
The unit houses four independent SEM (Synthesizer Expander Module) recreations, each built on through-hole discrete circuitry with vintage-specification components. Per-voice architecture mirrors the original: two discrete VCOs with hard sync, a two-pole state-variable filter, a triangle LFO, two ADS envelopes, an external audio input, and individual volume and pan. Miltone reverse-engineered the original potentiometers down to the ball-bearing detent mechanism so the feel matches.
Currently CV/Gate only — MIDI is in development. Each unit is hand-built and individually calibrated, and ships with a service manual.
Features
- 4× SEM modules, through-hole discrete construction.
- Per voice: 2 VCOs (hard sync), 2-pole state-variable filter, triangle LFO, 2× ADS envelopes.
- External audio input per voice.
- Individual volume and pan per voice.
- Reverse-engineered ball-bearing potentiometers.
- Expands Oberheim Four Voice to Eight Voice.
- CV/Gate (MIDI in development).
- Hand-built and individually calibrated.
- Ships with service manual.
Pricing & Availability
Pre-order now at €11,995. Shipping timeline not confirmed.
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