What are Device Profiles?

Every Android phone works a little differently, so to achieve more volume steps some calibration might be needed.

There are multiple calibration methods. If one doesn't work, try another.

Device Profiles are managed automatically. You don't need to activate them like you do with Volume/EQ presets. If you gave this app Bluetooth permissions, it should automatically detect what Device Profile to use.

PS: The default multiplier value for your device might work just fine! It's pre-calculated.