sudomod

So I recently purchased a mintypi off of eBay, and was wondering about the audio. Is it normal for the audio to sound a little scratchy when I emulate games other than like Gameboy and Atari? It's not the end of the world if I can't fix it since I still have audio, but it sounds pretty awful (majority of time) when I play Pokemon Emerald and such demanding titles similar to it. Attached I have photos of the wiring off of the eBay listing.

Everything is looking ok there, it could be the speaker itself that is on it's way out.