: For physical purchases, look for a small card inside the box with a scratch-off surface revealing the code.

To register your device and receive a code via email, you will need the serial number: On the Box : Located on the back or bottom near the barcode. On the Headset

If it does not appear, ensure your headset model supports it (all standard BlackShark V2 and V2 Pro models do). No code, no payment, no third-party tools.

Razer utilizes a specific software application—formerly known as Razer Surround, now integrated into Razer Synapse and often branded as THX Spatial Audio—to perform these calculations. Because this is a value-added software feature, Razer employs a digital rights management (DRM) system to limit usage to verified owners via an activation code.