Sennheiser+GSX+1000+7.1+Channel+Amplifier for sale online | eBay
Amazon.com: EPOS GSX 1000 Dac Amp Audio Amplifier/External USB Sound Card with 7.1 Surround Sound, Side Tone, Gaming DAC and EQ, Headphone Amp Compatible with Windows, Mac, Laptops and Desktops (Renewed) :
Amazon.com: EPOS 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. (Renewed) : Video Games
EPOS GSX 1000 External Amp - Micro Center
Used - Like New: Sennheiser GSX 1000 Audio Amplifier for PC and Mac - Newegg.com