How to lower USB headphone audio levels on Windows

When connecting my headphones via a simple USB-plug, the audio levels are often way, way, too loud. Today I had to turn the Windows audio level all the way down to 2% for the audio just to be OK’ish. That’s not very usable, and also kind of scary…

Finally I found something to fix it!

  1. Install Equalizer APO
  2. Open up “C:\Program Files\EqualizerAPO\config\config.txt”
  3. Replace its contents with:
    Preamp: -30 dB
  4. And adjust that level as necessary…

Finally I can use the Windows audio levels, and also not be afraid of suddenly having my ears destroyed if the audio were to move up a percentage or two…