Asus Xonar Essence STX Opamp Upgrade Pack - Burson Audio
Xonar AE|Sound Cards|ASUS USA
Asus Xonar U7 MKII External Sound Box 24 bit DAC Data Width 7.1 Sound Channels External C Media 6632AX USB 2.0 114 dB 3 Byte 192 kHz Maximum Playback Sampling Rate 3