Razer's Electra V2 headset does virtual 7.1 surround sound on a budget - The Verge
Razer Kraken USB vs. Razer Kraken 7.1 v2 Gaming Headsets – techbloggingfool.com
Razer Nommo Pro: THX Certified Premium Audio - Dolby Virtual Surround Sound - LED Illuminated Control Pod - Downward Firing Subwoofer - Powered by Razer Chroma - PC Gaming Speakers Headsets & Accessories - Newegg.com
Razer Kraken X-Mercury Gaming Headset 7.1 Surround Sound Headset with Bendable Cardioid Microphone 40mm Driver Unit - Walmart.com
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Razer - Call upon the ultimate in surround sound gaming, the Razer Kraken 7.1 V2: http://rzr.to/kraken71v2 The Razer Kraken 7.1 V2 is equipped with an advanced 7.1 virtual surround sound engine that
Razer unveils its Kraken Ultimate headset with THX Spatial Audio (updated) | Engadget