Flex Amp for Game Boy Advance with 2W speaker

This is a flex amp for the Gameboy Advance (GBA). robot_retro built this to address the main issue they find with alternative GBA amplifiers....they are too loud.

Key features:

1. Variable volume pot labelled "TRIM". This will adjust the peak volume of the amp. Set this during install with a small flat head screwdriver (2mm flat blade - iFix part "2"). This can also provide a better range at low volume if you like to play discreetly.
2. Preinstalled additional capacitators to reduce speaker hum.
3. Includes a 2W speaker to ensure there is no distortion at peak volume.

Install guide:

See here and below:

1. Remove the old speaker and trim off the old solder connections so they are flat with a pair of side cutters.
2. Pre-tin the GBA motherboard (see photo showing locations).
3. Solder on the flex amp at the four locations (see photo). I suggest to use a small amount of liquid flux to help neaten to joints and allow the solder to flow.
4. Solder on the speaker.
5. Using a small flat screwdriver, set the volume pot to the required peak level.