OnyxFilter

Overview

OnyxFilter is a distortion plugin engineered by Xenon Audio. It's designed for use inside Equalizer APO as a VST insert, giving you studio-quality processing at negligible CPU cost. Ideal for streamers, podcasters, and producers who want reliable, hi-fi audio processing without opening a full DAW.

• Ultra-low latency processing
• Sample-accurate automation
• CPU-efficient DSP
• Preset system with A/B compare
• Sidechain-ready routing
• Full 64-bit internal precision

Screenshots

Installation guide — Equalizer APO

1. 1
   Download

   Save the ZIP file for OnyxFilter to a folder you'll remember.
2. 2
   Extract

   Right-click the ZIP and choose Extract All. ZIP, RAR, and 7Z are all supported by tools like 7-Zip or WinRAR.
3. 3
   Locate the DLL

   Inside the extracted folder you'll find DeeSeer.dll. Move it into a permanent VST folder (e.g. C:\VstPlugins).
4. 4
   Open Equalizer APO Configurator

   Enable APO for the device you want to process (e.g. your microphone).
5. 5
   Open the Configuration Editor

   Click the + icon on any line and choose Plugins → VST plugin.
6. 6
   Browse and select the DLL

   Point Equalizer APO to DeeSeer.dll and click Open.
7. 7
   Configure

   Tweak the plugin's parameters in the popup. Changes apply live to your audio device.
8. 8
   Save & restart audio service (if needed)

   Save the configuration. If audio glitches, restart the Windows Audio service or reboot.
9. 9
   Done

   OnyxFilter is now processing your audio in real time.

Troubleshooting

Changelog

• v4.1.8
  2026-07-10

  Performance improvements and small UI polish.
• v4.1.7
  2026-06-22

  Added preset browser, new modulation shapes.
• v4.1.6
  2026-05-16

  Initial public release.