If you have obtained a valid 25-character digital code (often bundled with gaming headsets), follow these steps to activate it on Windows: Open the Microsoft Store : Search for "Microsoft Store" in your Windows taskbar. Access the Redeem Menu

The application offers a free trial for DTS Headphone:X, allowing users to test the spatial audio technology before committing to a purchase.

Short answer:

solution is actually free for all Xbox and Windows 11 users. How to get it : Download the DTS Sound Unbound

The solution is actually free to unlock for all Xbox and Windows 11 users. Unlike the headphone version, this feature does not require a paid license if you are connecting to compatible external hardware.

Finding a free redeem code often depends on the hardware you own or current community promotions. How to enable DTS-X on HyperX headphones?