Guide to Surround Sound Headphones - Headphone Dungeon
Mad Catz Tritton Pro+ True 5.1 Surround Sound Headset now shipping for $200 | Engadget
Amazon.com: APEKX True Wireless Headphones, Update 5.1 Auto Pairing Touch Control HiFi Stereo Sound in-Ear Earphones Binaural Call Headset with Built-in Mic and Charging Case for Sports Running Black : Electronics