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The PreenFM2 brings the old FM synthesis in a small open-source modern DIY box. DX7 preset compatible through sysex. Today’s technology in a small box. In addition to regular FM synth features you’ll get (firmware 2.01) :

4 independent instruments. Each of them has:
Powerful arpeggiator (Mutable-Instruments opensource algorithm).
1 effect Slot (LP, HP, Bass boost, Band Pass, crusher)
1 gate effect
4 rapid access performance parameters
The 4 instruments can be saved all at the same time in combo presets.
Each instrument has its own modifiable midi channel. They can share the same for FAT quadruple timbres notes.
Modifiable number of allocated voices… Between 1 and 14.
28 FM algorithms from 3 to 6 operators

Up to 14 voices of polyphony (8 if you use 6 op algorithms). Each voices has:
7 low frequency modulators (3 LFOs, 2 enveloppes, 2 step sequencers).
12 rows matrix : 16 sources, 32 destination (LP, HP, gate, stereo, MI, attack…)
Arpeggiator, LFOs and step sequencers synchronizable on external midi clock or internal clock.

Operator features:
7 builtin waveforms + 6 user waveforms read from the usb drive.
Stereo panning (at the carrier operator level)
8 envelope parameters per operator (DX7 like)

Direct Scala scale file loading for microtonality. Up to 128 Scala scales selectable from the preenfm2.
Modular Randomizer
USB all the way

Midi over USB
USB drive: huge preset banks: 64*128 presets, 8*128 combos, 256*32 DX7 presets.
The USB drive holds your preset banks, you scala scale files, your user waveform files.
Easy firmware upload and flash.
USB powered

Comprehensive user interface and associated to a 4×20 characters display for easy preset edition
Small, portable and easy to build (no SMD)
Mac/Linux/Windows open-source preset Editor

Technical Specifications
Type: Digital
Synthesis: Frequency Modulation
Oscillators: 6
Osc Modulation: Envelope, Knob, LFO
Envelopes: 2
Evelope Paramerters: Rate 1, Level 1, Rate 2, Level 2, Rate 3, Level 3, Rate 4, Level 4
LFO: 3
Polyphony & Tuning
Polyphony: 14
Timbrality: 4
Tuning: Standard
Modes: Polyphonic
Patches RAM: 128
Multipatches RAM: 256
Storage: USB
Editing: USB
+Arpeggiator syncable to MIDI Clock
+1 Slot with LP, HP, Bass boost, Band Pass, crusher
+2 Step Sequencers
Chips and Operating System
Case: Desktop
Controls: Buttons, Knobs, Arpeggiator, Sequencer
Display Type: LCD, Backlit
Display Count H: 4
Display Count V: 20
Audio Output Connections: 1/4" Phone Jack, Stereo Main
Audio Output Count: 2
DAC Bits: 18
Power: 7.5, 9 vdc
Year Released: 2016

Product Links
Company Product Sites:
[+] ixox.fr
Retail Street Price: $238 Kit, $338-$360 Assembled dependent on case style - convert
Used Price: $21-$212 - convert
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