Asus Xonar Essence STX PCIE soundcard, 2 Channel, Industry leading 124db SNR, Nichicon "Fine Gold" professional audio capacitors, Swappable OPA Audio Processor: ASUS AV100 High-Definition Sound Processor (Max. 192KHz/24bit) 24-bit D-A Converter of Digital Sources: Texas Instruments PCM1792A*1 for Front-Out (127dB SNR, Max. 192kHz/24bit) 24-bit A-D Converter for Analog Inputs: Cirrus-Logic CS5381* 1 (120dB SNR, Max. 192kHz/24bit) High Fidelity Headphone Amplifier: Texas Instruments 6120A2*1 (120dB SNR, 100dB THD+N @ Vcc±12V, RL=600O, f=1kHz) Analog Output Jack: RCA jack *2 (Front R / Front L), 6.30mm jack*1 (Headphone out) Analog Input Jack: 6.30mm jack *1 (Shared by Line-In/Mic-In) Other line-level analog input (for CD-IN/TV Tuner): Aux-In (4-pin header on the card) Digital S/PDIF Output: High-bandwidth Coaxial/TOS-Link combo port supports 192KHz/24bit Front-Panel Header: Shared by Headphone out / 2 channels out / Microphone in S/PDIF Header: Connects to compatiable graphic cards for HDMI output