Android >

Adjusting, reducing, increasing, customizing Android's volume.

Equalizer settings will be covered by an app, likely something like Volume+. The ones I tested were suspicious, so this will be a topic to research later.

• If you are looking for equalizer functionality, see Flat Equalizer.
• Android 12 has balance, volume, and equalizer functionality built in.

• Note that Sound Assistant has "Change step volume" which might also be useful.