Hello, I am using retropie 3.0 and previously I used version 2.6 and 2.3 in all version I have Sound problems with the output jack, There are a great buzz in the speaker and when I play a game I want hear the sound game and this buzz all the time.
If a conect by hdmi don´t have that problem, but I used retropie in a small screen and don´t have Hdmi conection.