Go to Settings > Sound & vibration > Audio effects.
Or, open the Moto app and touch 


To use only for the phone's speaker, set the sound profile for headphones or other audio devices to CUSTOM > 
To use only for headphones or connected devices, set the speaker equalizer to Flat.
You can select a preset sound profile for your headphones or other connected device, and your phone will remember the next time you connect it.
Go to Settings > Sound & vibration > Audio effects.
Or, open the Moto app and tap 

Select an effect:

To show or hide Audio effects in your list of apps:
Go to Settings > Sound & vibration > Audio effects.
Or, open the Moto app and touch 

To add or remove Audio effects in quick settings:
Touch 

