DTS-HD is an extension of the original DTS Coherent Acoustics format. All DTS-HD encoded content contains the original DTS 1.5 Mbps core. When played back through your existing DTS capable system, the DTS-HD extension is simply "ignored" and the DTS Core is recognized and decoded. Due to space constraints, most standard DVDs encoded DTS at only 768 kbps, or half of its’ full potential. DTS-HD can contain the full DTS core*, so your receiver will play back DTS surround audio at over twice the data rate of other formats.
All existing DTS receivers or home theater systems are compatible with DTS-HD Audio and can deliver an immediate audio improvement: clearer, fuller and more dynamic sound. In instances where the DTS-HD includes a DTS Core with 6.1 channels or 96/24, consumers with DTS-ES and DTS-96/24 will be able to enjoy 6.1 discrete channels or 96/24 audio in 5.1 surround.. This is a unique advantage of the DTS system.