I bought a gameboy that advertised as having prosound, and have decided to try my hand at modding

It didn't have the visible jack sticking out, so I thought it must've been an alternate prosound mod, so I decided to open it up to look around...

Besides the biverter mod, there doesn't seem to be any prosound mod..

Am I right.. ?

http://imgur.com/a/vg8Tp

Also, there's a very noticeable buzzing/high pitch sound when I start it up, and ruins any song I try to record.

Durgs.

Greetings sirs and madams,

I am Ivy and I am learning how to make chiptunes!
Like a lot of you, I absolutely adore the old shit and playing on Gameboys.

I also jizz to breakcore.

YMCK make some pretty cute stuff :3

http://www.youtube.com/watch?v=UmUu4toKJCA