Features: USB Spec 2.0 full speed compliant. USB Audio Device class Spec.1.0 and USB Class spec. 1.1 complaint SCMS (Serial Copy Management System) Complaint &Digital Audio streaming VIA S/PIF out. USB remote support 8 Channel DAC output with 16 bit resolution. Volume control and mute function Earphone buffer 2X interpolator for digital play back data to quality Color: black Material: ABS 2 Channel input with 16 bit resolution Alternate digital filter programmed by driver to quality Additional headphone out with selectable source and phone sense Stereo MIC support with boost capability Recording source select from S/PDIF, MIC, Line-In and summation of MIC, line- in front channel (all channels optional) MIC, Line-in monitor from front channel (all channels optional) with volume control and mute function Master volume control by default; per-channel volume control by C-Media driver Playback with soft-mute function Support 48/44.1 KHZ sampling rate for both playback and recording MCU support with two-wire serial interface Volume up / Volume down / Playback mute button LED indicator pins: operation / recording mute / SCMS protection C-Media value added software (multi-channel positional 3D sound, AC-3 encoder, .) Embedded USB transceiver and power and reset circuit C-Media value added patent software driver Xear 3D Sound Earphone Plug Speaker Shifter Environment Room Size Mode Graphic Equalizer Karaoke Function Support VISTA Package Contents: 1 x Sound Card 1 x Fiber Optic Cable 1 x USB Cable 1 x CD Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.