Sound Blaster X-Fi Surround 5.1 Pro turns your PC or notebook into a 5.1 entertainment system, featuring THX TruStudio Pro technology. Easy to install, it replaces low quality on-board audio with high quality connectivity options and remote control. A convenient volume control knob, headphone and microphone inputs for a headset are also close at hand. Audio Chipset: X-Fi Sample Rate: 96KHz External Box: Yes Digital Audio: 24-bit SNR: 100dB SPDIF In: RCA SPDIF Out: RCA MIC In: Yes