For the best results when using multiple audio mods (like ViPER4Android or JamesDSP), it is highly recommended to also install the Audio Modification Library (AML) . If you'd like more help setting this up, let me know: What Android version you're currently using. Which audio equalizer or mod you're trying to fix.

The is a Magisk module designed to fix issues where music and streaming applications (such as Spotify or Pandora) fail to process audio effects for various equalizer apps . It achieves this by modifying the device's audio policy. Module Details

Audio Compatibility Patch