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PreenFM is a set of electronic components and C++ files that, when put together become a Frequency Modulation sound module. (Its FM synthesis is not at all based on any Yamaha FM chip.)

The PreenFM with firmware 2.00, main features include :

. 9 different FM alogorithms with up to 6 operators
Each operator includes one oscillator and one ADSR enveloppe
Oscillator : 7 waveforms (4 sin variation + noise + square + sawtooth),
linked to keyb freq or fix, fine tune

. Up to 8 voice polyphony with 3 operators FM algoriyhm
up to 6 voice polyphony with 4 operators FM algoriyhm
and up to 4 with 6 operators FM algoriyhm.

. Glide available when voice set to 1

6 LFOs routable in the modulation matrix
. 3 standard LFOs (5 waveforms (sin, saw, ramp, square, random),
frequency in Hz or synced to external MidiClock (/16, /8, /4, /2, *1, *2, *4, *4, *8)
ramp up to 4 seconds, reset on new note).
. 1 Env type LFO
. 2 Step sequencers (16 steps) - BPM from 10 to 240 or synced to MidiClock (/4, /2, *1, *2, *4)

. 12 rows modulation matrix - 15 different sources and 42 destinations

. Gate effect (kind of) available in matrix destination - step sequencer routable

. 4 user banks of 128 presets

. System exclusive to exchange patches and banks with a computer
. Midi control : 44 control input/output control changes linked to parameters
. Nrpn : input/ouput of all paremeters
. Midi thru allow to insert the PreenFM in a MidiChain.
PreenFM Midi channel selectable
. Can send CC to external gear from modulation amtrix

. Large readable 4x20 LCD

. Friendly surface controle : You always clearly see on the screen what you're currently editing

. Sampling rate : 32768 Hz (Makes integer division faster ;-). Pseudo 11 bits.
1024 Hz for LFO and modulation matrix

. 6th order butterworth analog filter to convert the 1 bit output into a nice waveform

. Transparent case that allows you to see every day your nice work

. A PreenVST to control your PreenFM sound module from within your sequencer
(currently exists for OSX and win32/64 VST versions)

Technical Specifications
Type: Digital
Synthesis: Frequency Modulation
Oscillators: 6
Waveforms: Saw Down, Saw Up, Sine, Square, White Noise
Osc Modulation: Envelope, Knob, LFO
Envelopes: 6
Evelope Paramerters: Attack, Decay, Sustain, Release
LFO: 6
LFO Parameters: Saw Up, Saw Down, Sine, Square
Polyphony & Tuning
Polyphony: 8
Tuning: Standard
Modes: Polyphonic
Patches RAM: 128
Storage: Internal
Editing: MIDI
+2 Step sequencers
+ 16 steps
Chips and Operating System
Case: Desktop
Controls: Buttons, Knobs, Sequencer
Display Type: LCD, Backlit
Display Count H: 4
Display Count V: 20
Audio Output Connections: 1/4" Phone Jack, Mono Out
Audio Output Count: 1
Year Released: 2011
Year Discontinued: 2016

Product Links
Company Product Sites:
[+] sites.google.com
Retail Street Price: $145 - convert
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