SynthFest France 2025: SYNTHR SYNTHR10 is a boutique hand-made bi-timbral polyphonic analog Synthesizer à la Prophet-10, it’s ready for production.
At SFF 2024, Rémy Wasselin unveiled his new project, the SYNTHR10, a polyphonic analog Synthesizer in the style of the Sequential Prophet-10. The synth has now taken a year to complete.
Last weekend at SynthFest France 2025, Rémy from SYNTHR showcased the final production version of the SYNTHR10 Synthesizer.
The feature set has remained the same. However, the features announced last year have been implemented, such as bi-timbrality, the looper, and more. You can read the article from 2024 below. Here are some of the highlights:
Feature Set Summary
- two multi-wave oscillators based on the SSI2130 chips (Sequential Take 5…)
- PWM, sync…
- sub-oscillator and mixer
- two filters (SSI2040 and 3320)
- unique oscillator routing capabilities
- two envelopes
- two multi-wave LFOs with cross mod
- mod wheel, velocity, aftertouch, and poly aftertouch support
- two FX slots each with eight algorithms
- arpeggiator, sequencer, and looper
- USB, USB host, L/R outputs on XLR sockets, and regular 6.3mm, 5-pin MIDI interface….
Second Impression
This year, I had the chance to listen to the synth again. It sounds beautiful and powerful. The sounds are very classic, and you’d expect them from a polyphonic analog Synthesizer with a vintage influence. SYNTHR10 is not a cheap Synthesizer, because it is only produced in tiny series, mostly by hand in France by a single person.
SYNTHR SYNTHR10 is available on demand in tiny quantities (5 currently) for 3900€ incl. VAT.
Article from April 24, 2024
SynthFest France is a fascinating synth event that brings together developers from France and other areas of Europe. But unlike at Superbooth in Berlin, you can also find projects from private people who are developers in their free time. They created these in tiny quantities in an artisanal way.
One of them is Rémy Wasselin, better known as SYNTHR. Last SFF, he showcased the SYNTHR4 paraphonic synth with interchangeable oscillators and filters. This year, he is showing his new project, the SYNTHR10, a polyphonic analog Synthesizer.
SYNTHR10
SYNTHR10 is a new polyphonic analog Synthesizer with 10 voices. According to Rémy, it is inspired by the voice architecture of the Sequential Prophet 10 but with significantly more features. Important: At SynthFest France 2024, the SYNTHR10 was a prototype, so it came super fresh from Rémy’s synth lab.
The synth features two oscillators per voice based on the SSI2130 chips. The oscillators offer a shape mixer with a triangle/sine, saw, and pulse. PW and PWM are also available. Both oscillators are the same, except the second has an additional detune and sync option.
Then there is a mixer with an additional sub-oscillator. From here, it goes into two different filters. One is based on the SSI2040 with lowpass (12/24 dB/octave) with cutoff, resonance, envelope, and drive control. The second is a 3320-based multimode filter with 12/24dB with lowpass, highpass, bandpass, and notch.
The routing is very interesting and flexible. In the basic configuration, VCO1 goes through the filter 1, and VCO2 through the filter 2. Alternatively, with button presses, you can bring both oscillators either through filter 1, filter 2, or through VCF2 and VCF1 in serial mode. From here it goes than into a mono VCA with voice panning option.
Modulation
One of Rémy’s goals is to build a Prophet-10-like synthesizer but with significantly more modulation options. That is what it offers. On the modulation side, it comes with two envelopes for the VCA and VCF. Alternatively, the VCA envelope can be routed differently.
Next to this, you get two multi-wave LFOs and a cross-modulation section inspired by Sequential synths. You can also map a mod wheel, velocity, aftertouch, and poly aftertouch support. The ability to modulate almost every synth parameter makes it very powerful. You can do this by mapping with the buttons
Further, other features were not yet implemented for the SynthFest show, including a two-slot effect section, each with eight different algorithms to choose from. The same applies to the upcoming arpeggiator and sequencer. According to Rémy, it will work exactly like the one in SYNTHR4.
Alongside the arpeggiator/sequencer, it hosts a looper that captures up to 4096 MIDI events.
Further, there is also a two-slot effect section, each with eight different algorithms. It has not yet been implemented at SynthFest, but there is also an arpeggiator and sequencer coming into the synth. It works exactly like this one in SYNTHR4. You can also split and layer the voices.
Connectivity
On the connection side, it has a USB port, a USB host for connecting MIDI controllers, MIDI in/out/thru, various expression pedal sockets, and a stereo output. The housing will be made of wood and offer an aluminum front panel.
Like Rémy’s previous synths, it’s a hand-made product made artisanally in tiny quantities on demand.
SYNTHR10 First Look (Prototype)
First Impression
SYNTHR10 is a very fascinating new project by Rémy Wasselin (SYNTHR). It sounds already great as a prototype. Since it’s hand-made on demand and not a mass-produced instrument, I can understand the asking price. Nonetheless, I’m looking forward to seeing the final release of it.
SYNTHR SYNTHR10 will be released at the end of the year for a price of around 4500€. Shipping starts at the beginning of 2025.
More information will follow here: SYNTHR
4500 may seem like a lot of money, yet considering the feature set, the sound quality, and the flexibility of this synth, it makes the Arturia, Sequential, Moog, and every other ananlogue poly synth seem overpriced for what they offer and with scaled manufacturing!
Love these independent makers whom let their balls hangout!
Not necessarily. There are other synths with similar features (if not more) for at least half the price (made by small makers). For example:
https://www.gsmusic.com/synth-store/p/gs-e7-analog-polyphonic-synthesizer-blue
It’s just the usual thing that anything from certain places (such as France) is coming at “premium” prices. When I read where it was coming from I knew the price would be ridiculous. I was not disappointed…
GSmusic is a small brand but still mass-produces these products for a global market. SYNTHR is one guy who is doing this in his retirement. He’s current aim is to create five units. GSmusic produces them in a different scale with different production prices etc. Not comparable. It’s like you are doing a polysynth in your spare time and you sell it to a friend or so. So you can’t achive the prices from mass-produced synths. Plus all the works you did is not free.
Diego,
You provided one example and Tom is right, GS is a small company with scaled production and they thus the price point is going to be considerably better than a 1 man operation building less than 10 units. And you have to consider the inherent lower manufacturing cost of a company located in South America vs a French made synthesiser. I would not even designate SYNTHR a boutique maker, they are bespoke in a sense. The positive is that you have really good options.
And yet the question remains, what exactly this adds to an oversaturated market, where emulations and VA surpass their analogue counterparts in everything but hands on control…
Because Remy wanted to develop a Synthesizer in his retirement. With the amount he will produce, it doesn’t bring any major benefit to the market. It’s just there and he had fun doing it. It’s like someone painted a piece of art, he created a synth. More choice is always good and people like that who do it purely for fun shows that we have a great synth community.