Sennheiser GSP 550 PC Gaming Headset with Dolby 7.1 Surround Sound, Flip-to-Mute microphone, USB connectivity for Dekstop and Laptop compatibility, Open-back ear cups, breathable fabric Headset, black : Video Games
EPOS GSX 300 External Sound Card Review - PC Perspective
EPOS | Sennheiser GSX 1000 Gaming Audio Amplifier / External Sound Card, with 7.1 Surround Sound, Side Tone, Gaming DAC and EQ, Headphone amp Compatible with Windows, Mac, Laptops and Desktops. - Walmart.com
GSX 300 from EPOS | One small device for a huge step-up in audio
Sennheiser PC 333 D Over-Ear Headphones, Adjustable Headband, Volume Control, Built-In Microphone, Noise-Canceling with 3D G4ME1 7.1 USB Sound Card, USB Extension Cable, Carrying Pouch, Black, Silver, 504126 - Walmart.com
EPOS I Sennheiser GSX 300, Gaming Dac/External Sound Card with 7:1 Surround, High Resolution Audio EQ presets for Gaming, Movies and Music - Audio Gaming Amplifier for PC and MAC Compatible, Black -
EPOS Audio GSX 300 External USB Sound Card (Black) : Video Games