Simple and Powerful Audio Devices for All Musicians

The EssenceFM is a powerful hardware FM synthesizer designed to bring FM synthesis to today's standards.
It follows a very straightforward, graphical approach to make sound creation easy and enjoyable.

News : August 2019 Update

Create your custom algorithms

Graphical envelopes

Customize waveforms

Draw waveforms with the touch screen

Split/Layer voices to create a Patch

3D rendering of the EssenceFM synthesizer
Release / Pre-Orders : December 2019

We believe the future of FM synthesis should not be focused on emulation but towards new systems using modern technology.
That's why we designed our custom engine called "VFM" (Variable Frequency Modulation), providing great sound capabilities while running efficiently on embedded systems.

The EssenceFM is currently in development. It will be ready for production by the end of 2019.

Huge DSP capabilities

  • 300 voice polyphony, 16 part multitimbral
  • Up to 128 stacked 6-op voices per patch
  • 24 editable waveforms with real-time interpolation
  • 2 multi effects processors
  • Powerful modulation matrix
  • Integrated arpeggiator with wave-morphing capabilities

Easy to use

  • Optimized workflow using the touchscreen, physical keys and knobs
  • Useable as a rack or table-top module
  • Free algorithm design by drag&droppping the operators
  • Graphical envelopes with real-time status display
  • Direct waveform drawing on touchscreen
  • Dedicated physical Undo-Redo keys with 1000 step history

Advanced features

  • Microtuning support
  • Waveform import from wave files via USB
  • Four balanced stereo outputs (8x 6.35mm jack)
  • MIDI-RTP (Ethernet), MPE support
  • MIDI-host capabilities
  • Upgradable firmware

It's Fast

  • 60 frames/sec screen refresh rate. No slowdowns.
  • Boot time approx. 3 seconds
  • 2ms latency

Prototype Showcase

EssenceFM picture showing its front panel, powered off
EssenceFM picture in the dark, powered on, showing the screen and front panel

EssenceFM picture in the dark, powered on, showing the screen and front panel
EssenceFM picture in the dark, powered on, showing the screen and front panel

This is the prototype shown at the SynthFest event in France, 7-9 june 2019.
Hardware conception and preset sounds aren't finished, but most of the features have already been implemented.
More videos & content coming soon !

No key lock picture

No online activation, lock key or license system. EssenceFM is your synth without any restrictions.

Synthesizer represented in three positions : vertical (racked), tilted at 45° with support brackets, and horizontal.

Smart form factor allows for rack mount or table-top use.

Synthesizer represented in three positions : vertical (racked), tilted at 45° with support brackets, and horizontal.

Voices are basic 6-op FM sounds, patches are instruments stacking multiple voices, while performances can be used for complete orchestrations or very (very) fat sounds.

Detailed Specifications*

*Some specifications may be improved during product development.

Sound Engine

Synthesis type6-operator FM
Polyphony (FM Voice)300
Operator controlMultiplier (x0...x40) or fixed frequency (0...20Khz)
Quartertone & fine tuning
Key volume scaling (graphical)
Waveform phase control
Waveforms24 interpolated, band-limited waveforms
Waveform editionFree drawing / import from wave file.
Operations : Flip X, Flip Y, Smooth, Set volume, Remove DC, Mix two waveforms, Crossfade, Maximize, Add harmonic
Envelope generator6-points graphical, logarithmic, 14 per voice (6x volume, 6x pitch, 1x filter, 1x pan)
Patch layer parametersVolume
Bottom/Top key
Bottom/Top velocity
Exclusion Group (8 groups)
Round Robin (32 steps)
Filter1 per voice, lowpass, resonant
LFO1 per voice, waveform + bitmask combination
Waveform offset, delay & attack rate control
Independant or synced
Max. Voices per patch128 layers/splits
Max. Total Voices3328 (26 banks * 128 voices)
Max. Total Patches3328 (26 banks * 128 patches)
Max. Total Performances256
Modulation matrix300 instances (1 per voice)
8 source/destination mappings per voice
Scaling and Offset parameters
Modulation matrix SourcesNote number
Release Velocity
Poly. Aftertouch
Pitchbend Wheel
Number of active notes on the same MIDI channel
Envelope (pan, filter, operator volume/pitch)
Random number generator
MIDI CC (any)
Modulation matrix Destinations Operator Volume
Operator Waveform
Operator Waveform Phase
Operator Envelope Global Speed
Operator Envelope Segment Speed
Operator Frequency Coarse/Fine
LFO parameters
Filter Cutoff/Resonance
Sound engine internal resolution32-bit float
Scales/Temperaments32 editable presets
Custom scales up to 32 notes, 0-1200 cents tuning, octave stretching
Transposition+36/-36 semitones. Global, per patch and per voice
DAC24-bit, 48Khz
SNR> 100dB
Audio latency< 2ms
Boot time< 3s
Effect DSP2 multi-effect processors, parallel or chained
Effect ListReverb (7 types)
Stereo Delay
Stereo Chorus
Distorsion (5 types)
Ring modulation
Equalizer (3 band, 24dB/oct)
Arpeggiator1 per voice (300 total), 16 events, 128 steps resolution grid, 1-500 BPM tempo, syncable to MIDI beat
An event contains a voice ID, a note number, a duration and a volume. It can trigger notes or dynamically swap the FM parameters with another voice
Multitimbrality16 parts assignable to any MIDI channel
Supported standardsGeneral MIDI, MPE
MiscDX7* patch import (partial support)
Random voice generation
MIDI implementation(in progress)


Audio8x 6.35mm jack outputs, balanced, useable as 4 stereo pairs or 8 mono.
Stereo 6.35mm unbalanced headphones jack output
MIDIDIN (In, Out, Thru), RTP-Ethernet (AppleMIDI), USB
StorageUSB Type A, Mass-storage devices. Supported filesytems : FAT32 and exFAT.
Power adapterExternal, AC 100-240V
Power inputStandard DC jack, 12V 2A


Type7" IPS capacitive touch screen
Refresh Rate60 FPS
Fonts5 types
OtherAdjustable backlight brightness
Dim/Turn off the screen after a delay
Background pattern and color selection


Undo/Redo history1000 steps
Controls14 mechanical switches, 7 rotary encoders, 2 volume pots (main output & headphones)
Firmware upgradeThrough USB
Package contentsEssenceFM synth, universal AC adapter, user manual, tabletop brackets
Size (EssenceFM)133 x 486 x 65 mm (to be confirmed)
Weight (EssenceFM)-
Size (package)-
Weight (package)-
Standards Compliance-
Operating Temperature0 ~ 40°C

*DX7, Apple and other licensed trademarks are the property of their respective owners.