razer seiren v2 x headphone jak

Dear support.
I am asking for "razer seiren v2 x " device
Is the headphone port on the back of the microphone only for monitoring in and outgoing voice or can i use it for listening music and stuff (like playing game , casual use). because my computer headphone port (jak) seems broken because when i start play a game i hear some sizzle on my left side ( no problem when i'm not playing games) maybe it can be useful when using iphone earphone on computer.