GameCube handheld audio issues

[Oaisus]

I have this issue with the gamecube handheld I've been working on: there's this grating buzzing coming from the speaker that I can't get rid of.

I've tried a different amplifier, speaker, power sources (for both the entire thing and just the amplifier), I even tried pulling the signal from different places on the board.

When I disconnect the speaker, I can hear the amplifier making a very quiet buzzing sound too.

The sound changes drastically when I use a different power supply.

I don't know what to do at this point. Anyone have any ideas?



I can't figure out how to properly imbed a youtube video, so here's a regular link:

https://www.youtube.com/watch?v=cgCv3ORYG28

[Oaisus]

So, I figured out that the sound is coming from my 3.3v regulator, and the amplifier is amplifing the sound. How do I make my regulator not buzz?