The Poweramp Forum is a goldmine for user-submitted presets tailored for specific car audio systems and IEMs. Tips for the Perfect Sound

Instead of boosting the bass by 10dB, try cutting the mids and highs by 3dB and increasing the volume. This often results in a cleaner, less distorted signal.

The standard 10 or 16-band sliders. Easy for quick "V-shaped" tuning (boosting bass and treble).

Poweramp offers two ways to experience its EQ power: the built-in player equalizer and the standalone (which works with Spotify, YouTube Music, and more). Managing Presets in the App

Graphs and professional calibrations are great, but audio is subjective. If a preset sounds "tinny" to you, don't be afraid to tweak the 2kHz–4kHz range until it feels right.