Definition: DTS-ES refers to two 6.1 channel surround encoding/decoding systems, DTS-ES Matrix and DTS-ES 6.1 Discrete.
DTS-ES Matrix can create a center rear channel from existing DTS 5.1 encoded material, while DTS-ES 6.1 Discrete requires that the software being played already has a DTS-ES 6.1 Discrete soundtrack.
DTS-ES and DTS-ES 6.1 Discrete formats are backwards compatible with 5.1 channel DTS Receivers and DTS encoded DVDs.
