Best answer by Max
We are happy to hear that you are using one of our products :D
Regarding your inquiry, from the P20 series only the P20 and the P20 Pro have the equalizer option, with the Huawei Histen sound effects. However, the P20 Lite doesn't have that option.
While you still can modify the sound using the equalizer while headphones are connected, such as bass and treble, the equalizer option is not available on the P20 Lite.
Hope this information proves useful!