The Razer Barracuda? AC-1 Gaming Audio Card features a 7.1 channel output, 24 bit audio technology and unprecedented 117dB SNR (output).The 117dB Signal to Noise Ratio (output) specification clearly outperforms all current sound cards in the market that only perform up to an average of 105dB. The Razer Barracuda AC-1 Gaming Audio Card is the world?s first gaming audio card that performs up to a 117dB SNR. Recently, it was my pleasure to review the Razer Barracuda HP-1 Gaming Headphones. Today I finally get to finish that review. You see, the HP-1's are designed to integrate with Razer's AC-1 Gaming Sound Card in a way no other audio card and headphone combo has before to form the Barracuda IAS (Integrated Audio System). With the implementation of the Razer HD-DAI? proprietary interface, Razer hopes to set new standards in gaming audio with the Barracuda duo. PCApex.com