The two systems are the HT-SR600 and the HT-SR700 which are both 5.1 surround sound systems. Each system uses a powerful sub woofer and a set of tonally matched two-way satellite speakers along with a high power multi-channel A/V receiver complete with component video switching and complete surround sound processing.
Connectivity wise both systems have three component video inputs and one output able to switch 1080i/720p HD video sources without picture degradation. There are also three A/V inputs and two outputs with component and S-video connections plus three optical and one coaxial digital audio input. For easy set up the 5.1 multi-channel analog inputs are color coded and the receiver is compatible with both Dolby Digital Plus and DTS-HD formats found on HD DVD and Blu-Ray media. Each system uses five of Onkyo’s new satellite speakers with the front three speakers utilizing 3 ¼ inch cone woofers and ¾ inch ceramic tweeters. The surround speakers use the same design as the front but only use one woofer.