Stereo sound glitch

Miscellaneous glitches in Pokemon X and Y and Pokémon Omega Ruby and Alpha Sapphire

3D effect glitch | Backward sign reading glitch | Drasna Aura Sphere glitch | GTS filter glitch | Imported Eevee glitch | Mystery Egg glitch | Lumiose City save glitch | Poké Mart marquee glitch (Omega Ruby and Alpha Sapphire) | Pokémon Day Care sign glitch | PSS save glitch | Sky Trainer glitch | Stereo sound glitch | Stolen Poké Ball glitch | Wonder Trade move glitch

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This glitch occurs when sound is set to Stereo in the X/Y ingame options.

Effect

The sound is not altered by these options, instead staying in Mono. The option has to be tweaked in the 3DS menu options.

Cause?

Most likely a faulty command in the ingame options, as this does not occur in other 3DS games.