Mini sound card under test: EPOS│SENNHEISER GSX 300
GSX 300 - Snow Edition from EPOS | One small device for a huge step-up in audio
EPOS GSX 300 External Sound Card Review - PC Perspective
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 GSX 300 External Sound Card Review - PC Perspective