Core2: line out or external Speaker to Play .wav files?

  • Is it possible to connect Core2 to an external speaker or amp?
    I found out some people are going for Pin 25 / Pin 26 and ground on the M5STACK BASIC but what about the CORE2?
    I tried those pins, but doesn't seem to work.
    I am sure someone must have solved this problem. Is there sth. I need to set up beforehand in UIFLOW?