Luckily the GB(A) consoles are the easiest to mod nowadays, to add backlight, rechargeable battery, better audio... IMHO this is still the best way to enjoy GB/GBA games, instead of emulators which can be buggy/force me to stay on the computer (or worse, on my phone)
This is the way. Still have my AGS-101 SP stock besides new shell and buttons because, frankly, it doesn't need to be modded. But my GBA has an IPS screen, rechargeable usb-c battery, and hi-fi amp. Slap in a flash cart and it is easily one of the best ways to play any Gameboy game anywhere you want
I have everything except the amp mod. What does it do? I’ve heard it quiets noise (which the screen and battery mod apparently contribute to) but I haven’t seen a good comparison of original audio vs the upgraded amp.