Super Game Boy
The original Super Game Boy is known to play the game program and its audio 2.4% faster than other Game Boy hardware. This is due to the use of the Super NES's clock speed divided by 5, which ends up being 4.295 MHz instead of 4.194 MHz. The timing issue can be rectified by adding an appropriate crystal oscillator to the Super Game Boy and disconnecting the Super NES's clock source.