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Acon Digital Multiply is a free and versatile chorus effect with a unique twist. Each simulated voice is processed with a phase randomizing filter so that unpleasant comb filter effects are avoided. The effect can be used to simulate the effect of several performers playing the same tones simultaneously, to widen the spatial image or to create special effects for sound design. Multiply can simulate up to 6 additional voices and both the pitch and the loudness of the voices can be modulated. There is also an integrated equalizer consisting of low cut, low shelf, high shelf and high cut filters that can be applied to the effect signal. An integrated pre-delay section makes it possible to create modulated and diffuse echo effects.
Acon Digital Multiply is available for both Windows (PC) and macOS (Macintosh). Both 32 and 64-bit versions are available for Windows and the version for macOS is 64-bit. The plug-in formats VST, VST3, AAX Native / AudioSuite and Audio Units (macOS only) are supported.
A very nice plugin. Sounds very musical. Love it with my KORG M1 and Wavestation VST plugins (it really brings them to life).Read Review
Reviewed By Sycopation
October 20th, 2015
This is a high quality free product. Acon makes good stuff, free or paid.
It's as good or better than the free chorus from Blue Cat (just depends on the sound you're going for). I like it better than the Chorus that comes bundled with Studio One. It's not as good as Uhbik, but hey, u-he rules and Uhbik is not cheap, so that's hardly a slam on this great free product.Read Review
I started using Multiply at the beginning of the KVR-DC because I was looking for a chorus that produced clean results with complex sounds and included enough relevant parameters. Developers of other effects (EQ, compression, reverb, delay) now enable detailed tweaking, but chorus has not received the same love. Most have the same four knobs. Thus, when I opened Multiply for the first time and saw the GUI, I had high hopes. To my great relief, they were exceeded.
This is quite an imaginative app, which shows the developers took the time to understand the potential and problems of chorus, particularly the need to clearly separate the different voices. Because the app is free you can easily hear for yourself, but I will point out some details I like:
Simple high-contrast GUI with dark or light skins. The dry/effect sliders have a huge range (-48to+18db) with bypass buttons. You can modulate the chorus with pitch or amplitude with rate in Hz and depth in %, in 0.1 increments! You can increase voices from 1 to 6, with "phase randomization" to avoid comb filtering and muddiness. It includes stereo spread from mono to wide, and a delay from 1-500ms. It has a +/- 12db EQ with low/high cut and shelf. Undo/redo and A-B compare buttons.
Best of all, Multiply sounds very musical! There are only 18 presets, but each is quite different, and together they show the wide range. Of course, you can create your own library. If you want to clearly hear the differences between the presets, try putting Multiply after a simple waveform source like a monosynth or solo guitar and click through them. It has a manual, with the gist in two pages.
I did not know about Acon until the KVR-DC, but they sell some quite sophisticated DSP and audio editing products, so definitely have chops and it shows in this plugin. And... Windows/Mac, VST/AU/AAS.Read Review
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