Surround yourself with audio bliss! Revolution 7.1 is the ultimate audio upgrade for your PCI-based computer. Play DVDs and all your music in surround sound, make games more realistic, and record or mix your own music. 7.1 surround sound output and high-resolution 24-bit/96kHz fidelity ensures that you'll experience audio the way it was meant to sound. Revolution 7.1 packs all this advanced technology into a small, PCI card that's a breeze to install and use.