Ahead of SynthFest France 2026, NRSynth has unveiled the Quatuor, a clone of the Oberheim Four-Voice analog Synthesizer with modern extras.
SynthFest France 2026 starts in less than two weeks. French and international synthesizer developers and enthusiasts will gather again in Nantes for three days. One of the exhibitors from the very beginning is boutique builder Stephen of NRSynth.
Over the past few years, Stephen has been showcasing various vintage analog synth clones and unique combos like the RetroOne, a Minimoog with Prophet oscillators. This year, he has something big. NRSynth has announced the Quator, a clone of the legendary Oberheim Four-Voice.
NRSynth Quatuor
Last year, Stephen introduced the Solo, a hand-built clone of the Oberheim SEM Synthesizer. Now, he’s boosting this with four voices with the Quatuor.
According to NRSynth, Quatuor is an analog clone/replica of the Oberheim Four Voice. It features all the original features, including four SEM voices, each with two oscillators, a 12dB multimode filter, and more.
Besides the original features, it also comes with NRSynths modern additions. The oscillators have a pulse-wave sub oscillator (1-octave below VCO1) and an analog white noise generator.
The modulation section has two envelopes, but with switchable release from the Sequential Pro-1 Synthesizer. Stephen said, at SFF2025, that these are more punchy than the originals.
Alongside the analog triangle waveform LFO, there is also a digital LFO with eight waveforms + tilt with three frequency ranges and sync. Plus, you can find a sample-and-hold generator with sync, unlocking modulation options.
The NRSynth Quatuor has all these features times four, but even more. It also features a modern MIDI interface, developed in collaboration with Jean-Luc Lartigue from ozoe. If it has the same interface as the SYNTHR10, it also has a built-in arpeggiator and sequencer.
Quatuor also has a five-octave FATAR keyboard with velocity and aftertouch. Further, it houses, on the top panel, a Eurorack-compatible patch bay with 3.5mm jacks and other smaller features.
It probably also has the new analog portamento circuit at the input for gliding sounds like the Solo.
First Impression
At first glance, it’s looks like a lovely recreation of the Four-Voice. The synth sounds big in the demo. I’m really looking forward to seeing the Quatuor in person in Nantes and making a demo for you.
NRSynth Quatuor price and availability TBA. One thing is sure, it will be hand-built and available on demand. It will not be mass-produced.
More information here: NRSynth
oooh sounds lovely!
looks expensive as hell.
hand-built, and no mass-production just made on demand
The Solo (SEM Clone) is 1390€
it’s another one for the Zimmer of Hans.
😁
I’ll say….$6K.
Note: The Arturia SEM provides a fully polyphonic SEM emulation.
Just what we needed — another effort to chase ghosts from decades ago. Why innovate when it’s so much easier to just copy?
Because you can innovate in your music instead of your tools, innovation in music is the music maker’s job. Sometimes what you need is an instrument that does one thing very well, and if you want innovation, there are almost endless options to choose from today. I could have mentioned many, but I don’t feel like it 🙂
can t wait to try it at synthfest france!
<3
I hope it is around 5k euros ?????