I wonder if anyone found better speaker for GBA that fits in the case. I removed original speaker and placed one from KORG Monotron (pictured below), it fits perfectly. It sounds little louder, high-mid frequencies are more detailed. But i want something better! I own Samsung Galaxy S4 phone, its louspeker sounds great and i'm wondering if I need additional amp to drive it to use with GBA. For now i think those speakers are too expensive for trial and error. Maybe speaker from PSP or notebook would do the trick? It would be nice to hear some bass out of GBA. Anyone tried to replace speaker in GBA?