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Granular Synthesis Plugin by Output
Portal by Output 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 7 or higher
- 32 and 64-bit compatible (PC)
- 4GB of RAM required, 8GB recommended
- At least 300 MB of free driver space
- Reliable internet connection for download delivery
System Requirements
- Mac OS X 10.9 or higher
- 4GB of RAM required, 8GB recommended
- At least 300 MB of free driver space
- Reliable internet connection for download delivery
My KVR - Groups, Versions, & More
52 KVR members have added Portal to 9 My KVR groups 60 times.
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+4 in private groups

KVR Rank

Overall: 407   329   405

30-Day: 527; 7-Day: 552; Yesterday: 488

Portal is a granular synthesis FX plugin that transforms audio in a forward-thinking and musical way. Turn your VSTs, drum samples or any live input such as vocals or guitars into infinite new possibilities.

In the past, the results of granular synthesis were often chaotic and abstract. PORTAL re-synthesizes sounds to give you a result that's more closely related to the original input.

Built to be musical..

Easily alter any audio input—VSTs, drums, vocals, live guitar, you name it—in a new and musical way.

Infinite ideas in seconds

Experience the playability of granular effects that are actually centered around the music you make. While in the past granular sounds have been chaotic and abstract, PORTAL re-synthesizes sounds that are more closely related to the original input.

Zero gravity

Easy on CPU — pair it with Output's ARCADE or any other instrument to truly make sounds your own.

With PORTAL, granular synthesis takes your sounds to another dimension.


  • 250+ presets for instant playability.
  • A circular XY Control linked to granular parameters.
  • Powerful time manipulation engine.
  • Tempo-synced grain delay.
  • Scale-based pitch modulation.
  • 7 built-in FX with an additional master compressor and filter.
  • Value readout panel for better understanding of controls.
  • Favoriting feature in Presets menu.
  • Built-in Tool Tips on Advanced page.

{See video at top of page}

Latest User Reviews

Average user rating of 1.00 from 1 review

Reviewed By rydan
November 17th, 2022

It was good, while it worked. Now it's been over two years without native Apple Silicon support. Output support says "next 6 months. Maybe..." They also do not allow license transfers of the software (which by the way isn't exactly inexpensive), even when they clearly do not deliver on their part. So, paid for it, but can't use it properly, and can't sell it either.

Thought Output was a cool company, but have very much changed my mind. Won't buy anything more from them.

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