Best Buy: Tritton Warhead 7.1 Wireless Surround Headset for Xbox 360 TRI476740M02/02/1
Tritton's Pro+ 5.1 headset goes up for pre-order, promises gamers 'true 5.1' for $200 | Engadget
Amazon.com: TRITTON Kunai Pro 7.1 Virtual Surround Sound PC Gaming Headset with USB Cable, Gaming Headphone with Soft Memory Earmuffs Compatible with PC, PS4, Mac, Laptop
Used TRITTON Kunai 3.5mm Stereo Headset for Xbox One - Black TRI484030M02/02/1 - Walmart.com