Dolby Digital Plus is the next-generation audio technology for all high-definition programming and media. Built on Dolby Digital, the multichannel audio standard for DVD and HD broadcasts worldwide, Dolby Digital Plus was designed for the delivery formats of the future, but remains fully compatible with all current A/V receivers. Dolby Digital Plus supports two important new digital connections:  High-Definition Media Interface (HDMI) and IEEE 1394 (FireWire). Other features of Dolby Digital Plus include: Multichannel sound with discrete channel output. - Channel and program extensions can carry multichannel audio programs of up to 7.1 channels. - Supports data rates as high as 6 Mbps - Bit rate performance of at least 3 Mbps on HD DVD and up to 4.7 Mbps on Blu-ray Disc - Supported by HDMI, the new single-cable digital connection for high-definition audio and video.