I have released 2xPSG version - MSX ZANAC.

[@JasperTedVidalTale]

I think they should have just gave you the option to turn off Sound Effects

[@toughkidcst]

I thought there might be others with similar preferences, so I set the MSX Internal PSG to output the same as the original, while the External PSG plays only the BGM without SFX. Feel free to mix them to your liking and enjoy the gameplay.

[@JasperTedVidalTale]

@@toughkidcst No i meant the original devs should have given that option before