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Harmonic Distortion Plugin by apulSoft
apShaper wave folding
apShaper tube sat apShaper dark skin apShaper harmonic distortion apShaper bit crusher apShaper dynamic saturation
apShaper by apulSoft is a Virtual Effect Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.
System Requirements
Windows Vista or newer. Both 32-bit and 64-bit versions of Windows are supported.
A CPU that supports SSE2 instructions (Pentium 4 or newer).
A host application that can load VST, VST3 or AAX plugins running in 32-bit or 64-bit mode.
Pro Tools (AAX): The minimum required Pro Tools version is 10.3.5.
An application to view pdf files to read this manual.
System Requirements
A Mac with an 64-bit Intel/Apple Silicon CPU running OS X 10.9 or newer.
A host application that can load VST, VST3, AU or AAX plugins running in 64-bit mode.
Pro Tools (AAX): Pro Tools 11 or newer.
Copy Protection
Serial Number
My KVR - Groups, Versions, & More
7 KVR members have added apShaper to 4 My KVR groups 8 times.
Not In Your MY KVR Groups
(or group limitation prevents versioning)

KVR Rank

Overall: 3119   2363   3022

30-Day: 4675; 7-Day: 5098; Yesterday: 8826

apulSoft apShaper is an audio insert effect plugin to add harmonic content to audio signals.

It combines a waveshaper with three filter bands and various modulation options - two LFOs, a dy- namics detector, and user-configurable knobs.

apShaper comes with five shaper engines ranging from adding harmonic distortion to freely config- urable polygonal wave folding.

The waveshaper in apShaper uses sophisticated algorithms to reduce aliasing. It approximates continous- time (idealized analog) waveshaping using numerical integration. This reduces digital artifacts more than traditional oversampling could, especially if the transfer curve is not smooth (wave folding/bit crushing). The process only adds 7 samples of latency to the signal which means apShaper can be used for real- time performance.

The three filter bands offer high-quality filtering without high-frequency squeezing. The variable-slope low-pass filter type allows smooth slopes not possible with traditional filtering - ideal to gently shape sig- nals with large amounts of distortion applied. Multiple tone control types modeled after classic circuits enable classic bass/mid/treble tone shaping.

Latest User Reviews

Average user rating of 4.00 from 1 review

Reviewed By [PTMAO]Dusk
November 20th, 2019

Great plugin. odd that this the first review! Just tested the demo for version 1.0.1 build191117.


-The modulation panels adds great features to the all saturation circuit, making it possible to control when and how the saturation happens;

-The different algorithms for saturation sound really good (harmonic / tube / saturation / steps / wavefold) and how we change the shape it great;

-The filter types for Eq are enough for manipulating the sound! they are post-shaper, i believe;

-GUI resize from 50% to 200%, very nice.

-CPU wise - even in ultra mode doesn't "suck" much CPU and is great in the number of samples it introduces (using the compressor lookahead introduces some more samples has usual).

- Spectrum analyser makes it possible to visualize how the sound has changed in reagards the process made, is great, avoids 3rd party plugins for that task;

-Two programmable knobs for any plugin task, amazing feature;

-Phase input and output, many will think is not necessary, but when dealing with saturation many things can change along the process;

-Variable DC filter;

-MIDI controllable;


- Meters could display dbFS values;

-Alt /Ctrl + Click doesn't reset the knobs / sliders to default values;

Feature request:

-Introducing a module swap to change what comes first in the chain.

-Two saturation units to combine drives.

-more UI skins.

Thanks apulsoft, keep the good things coming.

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