Channel Virtual 7.1 Sample Rate 96 KHz Digital Audio 24 bit SNR 118 db Interface USB2.0 Operating Systems Supported Win 2000 / 2003 / XP / Vista / windows7 Mac OS / Android 3.0 or later Features Supports 7.1/5.1 stereo sound output; Supports 3D audio; Supports high quality d/a conversion; Supports 16/24 bits digital audio; Supports MS DirectXEAX1.0/2.0 and HRTF 3DX; Supports volume +/- play silent and recording silent play and stop last/next song change; Supports various sound format / music software; Can have four sound effect: ROCK/JAZZ/Subwoofer/Normal; Suitable for DVD digital products music game and online use; Supports 24-bit 95kHz under Windows XP; 16-bit 48kHz under Windows 7 64-bit Packing List 1 x USB sound card 1 x USB cable (50cm) 1 x English user manual