Hello All, I've just finished building the version suggested by Jo22. It works pretty fine, I'm very surprised how good it sounds, because I couldn't get the right resistor values. Maybe I messed something up with the first try. Thanks for the help.

Hi all! I have just finished building a Covox plug (I have used the schematics provided on Wikipedia). I have double checked the circuit, it looks fine according to the schematics, however it produces a crap ton of static hiss with everything I tried. I have tried some games, and Inertia Player. …