Super Game Boy Clock Mod
The original Super Game Boy runs about 4% faster than an original Game Boy, most noticeable in the audio playback.
The Japan-only Super Game Boy 2 fixed this problem by installing a crystal oscillator running at the correct speed.
This mod provides the fixed clock speed into the I/O chip, the same way the SGB2 does. This mod needs to some soldering skills to be installed
Installation manual can be found here
