Bucket Mouse's sound amplifier from the MGBC adapted to the stock AGB. This mod replaces the original AGB AMP for better sound rather than add a boost to a dated design.
Install guide
Reviews
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Awesome!
Pedro · January 30, 2026
This one was a little more involved than I first thought but the result was well worth it. As Nat mentions in the description it's not just a slap flex PCB that amplifies the sound warts and all but actually replaces the existing sound circuit on the GBA.