HY-Mono (Win/Mac) – Monophonic Synthesizer [FREE Download]
The structure of this synth is based on Oberheim SEM.

Changing Preset Folder Location

You can move “HYMONO” folder to where you like.
If you change preset folder location, next time you need to set preset folder location.

Clicking preset menu button of HY-Mono, popup menu will show up like picture above. If you select “Change Preset Folder Location“,
preset folder select window will show up.

You need to select “HYMONO” folder.
And next time HY-Mono will read preset files from that place.

There are two VCO units + Sub/Noise unit.
Each VCO unit can generate saw/pulse waveform.

– Frequency
Bigger knob = coarse(range: -24 to +24 semitones)
Smaller knob = fine(-3 to +3 semitones)

– Modulation
Frequency or Pulse width of oscillator can be modulate by envelope/lfo

– Pulse Width
Set pulse width of pulse waveform(not affect to saw waveform)

– Sync
Turn on sync button, oscillator of VCO2 will be synced to oscillator of VCO1.

– Sub
select waveform of Sub oscillator

– Mixer
You can control oscillator volume in VCF panel.


– Frequency
cut-off frequency

– Resonance
resonance level

– Modulation
modulation depth(-100 to 100 %)
modulation source = Env2/LFO

– Filter Type
you can control balance of lowpass and highpass
turn on “Bp” button, filter output switch to bandpass.

– Mixer
you can control outputs of VCO section by three knobs at the bottom of VCF panel

ADSD type envelope generator release rate is defined by decay value
Velo to Envelope – tick the velo box, envelope outputs will be affected by velocity input

LFO unit can generate sine waveform

– Rate
LFO speed(0.1 to 55 Hz)

– Phase
phase position of sine waveform
this setting is making sense when “LFO Reset” swith is active.


– Time
delay time – turn on “S” swith, delay time is synced to host BPM.

– Mod
delay time can be modulated by ENV1/LFO.

– FB
feedback level

one pole filters for delay line outputs

– Mix
mix level of delay effect outputs to main signal path

you can control pan position  and master output level here.

Midi To CV

PitchBend Range
You can set PitchBend range here.(+/-1 to +/-12 semitone)

Note Priority
If multiple notes are pressed at the same time,
one of pressed notes will be given priority based on this setting.

Control Modes
Re-Trigger = If this switch is ON, Env1 and Env2 are always triggered by key press.
Filter Track = If this switch is ON, filter cutoff frequency will be affected by played note.
LFO Reset = IF this switch is ON, phase of LFO will be reset by key press.

Midi To Synth Params
You can modulate synth parameters by midi signal.

Source Menu = Velocity, ModWheel, AfterTouch, CC1, CC2
Target Menu = VCO1 Freq, VCO2 Freq, VCF Cf, VCA Amp, Pan, Delay Time
Knob = mod depth(-100~+100%)

You can transpose incoming midi notes.(-2 ~ +2 octave)

ON/OFF Swith = portamento on/off
Knob = portamento time

Randomize Setting
Ticked panels will be included randomize.
In this case, params of vco1, vcf, env2 and lfo will be randomized.

Re-Size Plugin Window
You can re-size plugin window by pulling bottom right of the plugin window.