Superbooth 2026: This video, via CatSynthTV, offers a first look at the Miltone 4EXP – a full-size replica of the original Oberheim Four Voice synthesizer.
The Oberheim Four-Voice is a iconic mid-1970s analog polysynth, created by Tom Oberheim, that essentially combined four independent Oberheim SEM modules into a single keyboard instrument. It was one of the first true polyphonic synthesizers available to musicians, but had a very different architecture than later polysynths.
Each voice is a complete SEM with its own VCOs, multimode filter, envelopes, and modulation, allowing every note to have slightly different timbre and behavior, which gives the instrument a uniquely organic, animated sound.
Video Summary:
“Manfred from Miltone treats us to a demo of the 4EXP, an impressive and meticulous re-creation of the legendary Oberheim Four Voice.
Like the original, there are four SEM models, build from discrete components and circuit boards the accurately match the original – they even have potentiometers with ball bearings. It does of course include modern features like MIDI as well.”
Details on pricing and availability are to come at the Miltone site.
At Superbooth 2026, Majella Audio is introducing the Compax semi-modular West Coast synthesizer.
The Majella Compax is a compact, semi-modular desktop synthesizer incorporating core West Coast synthesis elements, derived from its larger sibling, the Implexus.
Features:
Patchable semi-modular architecture
Complex oscillator with a continuously variable waveform
Wavefolder section provides West Coast-style harmonic shaping
Modulation control includes LFO, dual envelope generators, and a sequencer
The Compax includes an LFO with five waveform options and external clock sync capability.
20 patch points
*Note: Official specifications are still to be announced.
Details on pricing and availability for the Compax are still to come at the Majella Audio site.
At Superbooth 2026, KOMA Elektronik introduced Monoplex, a performance-driven Eurorack sequencer that they say is “built for evolving melodic control”.
The Monoplex is inspired by KOMA’s larger Komplex Sequencer, but distills its hands-on philosophy into a focused, single-channel design.
Every core parameter can be voltage-controlled, opening the door to endlessly shifting yet fully deterministic sequences. At its heart is an expanded quantizer. Beyond chromatic, major, and minor modes, Monoplex allows you to upload your own scales via MIDI SysEx using a browser-based tool. You can choose from thousands of microtonal scales or create and audition your own.
A dedicated MIDI-note capture mode also lets incoming notes define the active scale on the fly.
Compact and immediate, Monoplex delivers an endless supply of melodies and modulations inside your Eurorack system. Here are the details:
Features:
CV-able Options
First Step (Sequence Start Point)
Sequence Length
Skip Step – Multiple Modes
Gate Length
Repeat Step – Simple or Ratcheting
Glide
Play Mode – Multiple Modes
Transpose
Divisions
Sequencer Features
CV Out
Gate Out
Trigger Out
MIDI Out
Output Range 2V, 5V, 10V
Unipolar / Bipolar CV-Output
One-Shot Mode
Swing
User Interface Color Changes
Quantizer / User Scales
Wilson MTS-ESP scale system
3 user-definable scales, on-the-fly editing
Live scale upload via web interface (beta) directly via browser on PC, laptop and mobile, via SysEx
Live scale input via MIDI, e.g an attached keyboard
Live scale input via slider method on the sequencer itself
MIDI implementation via Note On + Pitch Bend information for MIDI synthesizers
Sync
Clock Input
Clock / Division Output
Start Trigger Input & Output
End Trigger
Reset / Pause Trigger Input
MIDI In
MIDI Sync Master / Slave
MIDI Sync Start / Stop
The KOMA Monoplex is available to pre-order now, priced at 498,00 €. Shipping is expected to start in June of 2026.
