This installer package contains drivers and software for the M-Audio Revolution 7.1 8-channel 192 kHz/24-bit PCI audio card, providing audio output support for up to a 7.1 speaker configuration. WHAT'S NEW [Driver] The "stereo-only" Analog 1/2 engine has been removed and the functionality replaced with an added "stereo-only" format on the primary Analog engine, thus improving system stability. [Driver] Addressed kernel panic issues. [Device Helper] Fixed issue where Mac OS X 10.4 (Tiger) would not shutdown or restart. [Panel] Additional speaker sets in Control Panel.