Yes, the works by replacing the standard .rpf audio files in your GTA V directory. Because FiveM draws its core assets from your base GTA V installation, these changes carry over into any server you join.
The is arguably the best "bang for your buck" (pun intended) when it comes to free immersion mods. It bridges the gap between a "game" and a "simulator." If you want your sirens to wail with authority and your tires to screech with realism, this is the definitive audio solution. fivem clean sound pack v2 work