The SONAR REAC Recording System when used in conjunction with the RSS V-Mixing System or RSS Digital Snakes provides the most comprehensive live recording, mixing, mastering and delivery product available. This is the next phase in product development of the REAC driver, which Cakewalk engineered for Roland as a way for users to record from their Digital Snake/V-Mixer System directly into SONAR. The SONAR REAC Recording System includes:     SONAR 7 Producer Edition     REAC Technology Driver     Cakewalk SPS-66 FireWire audio interface     V-Mixer and Digital Snake Templates     Users Guides     SONAR 7 Producer Edition DVD-ROM     SONAR 7 Producer Edition ManualSONAR REAC Driver CDROM     Cakewalk SP-66 Firewire InterfacePSB-1U     Power Supply     6pin-6pin and 6pin-4pin Firewire Cables The REAC protocol provides up to 40 channels of audio to be sent via a single CAT5e Ethernet or fiber optic cable. The REAC driver, developed by Cakewalk, allows the REAC output from the RSS V-Mixer or RSS Digital Snake to connect directly into a PC using a single Ethernet cable.