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The SDK includes some Plug-ins implementation examples. The Legendary AGain and ADelay, thanks Paul Kellet the Open-source mda Plug-ins, a basic "Note Expression Synth" supporting "Note Expression Event", an example of pitchnames support Plug-in, a VST3 Host Checker which checks if a host is VST3 compliant and more...

Check the folder "public.sdk/samples/vst" of the SDK!

Note: They use cmake as project generator: How to use cmake for Building VST 3 Plug-ins
In order to add your own Plug-ins check: How to add/create your own VST 3 Plug-ins


Very simple delay Plug-in:

  • only one parameter (a delay)

Check the folder public.sdk/samples/vst/adelay of the SDK!



The SDK includes a AGain Plug-in which is a very simple VST 3 Plug-in. This Plug-in:

  • is multichannel compatible
  • supports bypass processing
  • has an automated gain parameter
  • has an Event input bus (allowing to use noteOn velocity to control the gain factor)
  • has a VU peak meter
  • uses the VSTGUI4 library
  • a version of this Plug-in with side-chaining is available (showing a Plug-in using the same controller and different components)
  • a AAX version is available
  • a AUv3 version is available

Check the folder public.sdk/samples/vst/again of the SDK!


  • AGain
  • AGainWithSideChain (used for side-chain version)
  • AGainController

AGain Sample Accurate

Simple Plug-in showing how to achieve sample accurate processing.

Based Check the folder public.sdk/samples/vst/again_sampleaccurate of the SDK!


Very simple Plug-in:

Check the folder public.sdk/samples/vst/channelcontext of the SDK!


  • Instrument, Panner and Fx Plug-in checking the VST 3 support of a host.
  • It uses VSTGUI
  • a AAX version is available

Check the folder public.sdk/samples/vst/hostchecker of the SDK!


Very simple Plug-in:

Check the folder public.sdk/samples/vst/legacymidiccout of the SDK!


  • LegacyMIDICCOut::Plug

mda Plug-ins

  • Effects (stereo to stereo Plug-ins):
    • Ambience : Reverb
    • Bandisto : Multi-band Distortion
    • BeatBox : Drum Replacer
    • Combo : Amp and Speaker Simulator
    • DeEsser : High frequency Dynamics Processor
    • Degrade : Sample quality reduction
    • Delay : Simple stereo delay with feedback tone control
    • Detune : Simple up/down pitch shifting thickener
    • Dither : Range of dither types including noise shaping
    • DubDelay : Delay with feedback saturation and time/pitch modulation
    • Dynamics : Compressor / Limiter / Gate
    • Image : Stereo image adjustment and M-S matrix
    • Leslie : Rotary speaker simulator
    • Limiter : Opto-electronic style limiter
    • Loudness : Equal loudness contours for bass EQ and mix correction
    • MultiBand : Multi-band compressor with M-S processing modes
    • Overdrive : Soft distortion
    • RePsycho! : Drum loop pitch changer
    • RezFilter : Resonant filter with LFO and envelope follower
    • RingMod : Simple Ring Modulator
    • Round Panner: 3D panner
    • Shepard : Continuously rising/falling tone generator
    • SpecMeter : Stereo 13 Bands spectral Meter
    • Splitter : Frequency / level crossover for setting up dynamic processing
    • Stereo Simulator: Haas delay and comb filtering
    • Sub-Bass Synthesizer: Several low frequency enhancement methods
    • TalkBox : High resolution vocoder
    • TestTone : Signal generator with pink and white noise, impulses and sweeps
    • Thru-Zero Flanger : Classic tape-flanging simulation
    • Tracker : Pitch tracking oscillator, or pitch tracking EQ
  • Instruments (1 Event input, 1 stereo Audio output):
    • DX10 : Sounds similar to the later Yamaha DX synths including the heavy bass but with a warmer, cleaner tone.
    • EPiano : Simple EPiano
    • JX10 : The Plug-in is designed for high quality (lower aliasing than most soft synths) and low processor usage
    • Piano : Not designed to be the best sounding piano in the world, but boasts extremely low CPU and memory usage.

Based on the OpenSource mda Plug-ins (, this set of Plug-ins demonstrates how wrap DSP code in a VST 3 Plug-in.

Check the folder public.sdk/samples/vst/mda-vst3 of the SDK!


  • BaseProcessor
  • BaseController
  • BaseParameter

Note Expression Synth

  • Instrument Plug-in supporting note expression events
  • It shows how easy it is to use VSTGUI
  • a AUv3 version is available

Check the folder public.sdk/samples/vst/note_expression_synth of the SDK!


  • NoteExpressionSynth::Processor
  • NoteExpressionSynth::Controller
  • NoteExpressionSynth::Voice

Note Expression Text

  • Plug-in visualizing the NoteExpression as Text
  • It shows how easy it is to use vstgui4

Check the folder public.sdk/samples/vst/note_expression_text of the SDK!


  • Simple Panner Plug-in showing how to support Panner category (mono to Stereo)
  • It shows how easy it is to use VSTGUI

Check the folder public.sdk/samples/vst/panner of the SDK!


  • PlugController
  • PlugProcessor


  • Instrument Plug-in showing PitchNames support
  • It shows how easy it is to use VSTGUI

Check the folder public.sdk/samples/vst/pitchnames of the SDK!


  • PitchNamesController
  • PitchNamesProcessor
  • PitchNamesDataBrowserSource


Very simple Plug-in:

Check the folder public.sdk/samples/vst/prefetchablesupport of the SDK!


Very simple Plug-in:

  • showing how to support Program List
  • using a generic UI

Check the folder public.sdk/samples/vst/programchange of the SDK!

Sync Delay

Very simple delay Plug-in:

Check the folder public.sdk/samples/vst/syncdelay of the SDK!

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