How to Use VST Plugins in OBS Studio

Yes, you can apply audio Virtual Studio Technology (VST) plugins to your microphone within OBS Studio to significantly improve your live audio quality. This article provides a quick overview of how OBS Studio supports VST plugins, followed by a straightforward, step-by-step guide on how to install and apply them to your microphone filter chain for professional-sounding streams and recordings.

Understanding VST Compatibility in OBS Studio

OBS Studio natively supports VST 2.x plugins. While some VST3 plugins may work depending on your operating system and OBS version, VST 2.4 (.dll files on Windows, .vst files on macOS) remains the most stable and compatible format.

Before starting, ensure you install your VST plugins to the default system folders, as OBS Studio scans these specific paths automatically:

• Windows: C:/Program Files/Steinberg/VstPlugins/ or C:/Program Files/Common Files/VST2/
• macOS: /Library/Audio/Plug-Ins/Components/ (for AU) or /Library/Audio/Plug-Ins/VST/

Step-by-Step: Adding VST Plugins to Your Microphone

Once your plugins are installed in the correct directory, follow these steps to apply them to your microphone in OBS Studio:

1. Open OBS Studio and locate the Audio Mixer dock.
2. Find your microphone source (usually named Mic/Aux), click the three vertical dots (or gear icon) next to it, and select Filters.
3. In the Filters window, click the “+” (plus) icon in the bottom-left corner to add a new filter.
4. Select VST 2.x Plug-in from the list. Give the filter a recognizable name (e.g., “EQ” or “Compressor”) and click OK.
5. In the drop-down menu labeled Please select a plug-in, choose the specific VST plugin you want to use.
6. Click the Open Plug-in Interface button. This will launch the plugin’s native graphical interface, allowing you to adjust knobs, faders, and settings in real-time while speaking into your microphone.

Recommended Plugins and Best Practices

To get the best audio results without causing latency or high CPU usage, consider adding these common plugins in the following order:

• Noise Gate / Noise Reduction: Cleans up background hiss, fan noise, and keyboard clicks before the audio is processed.
• Equalizer (EQ): Adjusts frequencies to boost clarity, tame harsh “s” sounds (de-essing), or add warmth to your voice.
• Compressor: Evens out your volume levels so that loud laughter doesn’t clip the audio and quiet whispers can still be heard.
• Limiter: Placed at the very end of your filter chain to act as a safety barrier, preventing your audio from distorting if you shout.

Always monitor your CPU usage when adding third-party plugins, as running too many complex audio processors simultaneously can cause audio desync or performance drops during live broadcasts.