FirebrandX has made a detailed post about PS1 Digital audio mod
@FireBrandX has just posted an excellent article about the Playstation 1 Digital Audio mod from @Citrus3000psi board. On top of that, he explained how to make it a #NoCutMod. Thanks to him, great info there as always!: http://www.firebrandx.com/psxdigitalaudio.html