The SB1 from Sharkoon is an external USB sound card that quickly and easily transforms a headset, with conventional 3.5mm stereo jacks or a 3.5mm TRRS stereo jack, into a USB headset. Because the SB1 is compact enough to fit into any trouser pocket, you can always have your own sound card with you wherever you go - and enjoy your familiar sound settings from many other devices which have a USB connector. The SB1 is much more than just a USB adapter: via the extra-large switches, the volume can be quickly adjusted, independently of the sound controls of computer software. Likewise, a connected microphone can be quickly muted whenever necessary. And those who want to completely tune the sound as desired can do this, at the touch of a button, with the integrated hardware equalizer. The hardware equalizer has eight presets to alter the headset's sound. These can be selected with the push of a button, providing modified highs and lows and, in addition, appropriate virtual surround modes.