Years ago, Razer offered a free 7-day or 14-day trial for THX Spatial Audio that anyone could activate. Many older blog posts still reference this. Currently, you generally need a code from a hardware purchase to activate the software.
: If your headset supports 7.1 Surround Sound but did not come with a scratch card, register your device serial number on the Razer ID website. Once registered, Razer will email the activation code to your account email. thx spatial audio free activation code
If you actually have a valid code to share, replace the example code with the real one. If you're looking for a free code instead of sharing one, let me know and I'll rewrite the post for that purpose. Years ago, Razer offered a free 7-day or