Sound Blaster Sound BlasterX G6 External Sound Box - 32 bit DAC Data Width - 7.1 Sound Channels - External - Micro USB - 4 Byte 384 kHz Maximum Playback Sampling Rate - 1 x Number of Microphone Ports - 1 x Number of Headphone Ports - 1 x Number of Digital Audio Optical Input - 1 x Number of Digital Audio Optical Output: