DTS-ES 7.1 support is spotty. Many “7.1” kits actually output only 5.1 decoded plus matrixed rear surrounds.
When you open the box for a standard 7.1 DTS Dolby Digital Decoder Kit (often labeled as "AC3/DTS Decoder Board"), you will find the following components: 7.1 dts dolby digital decoder kit
Whether you are wiring up a home cinema or a custom arcade cabinet, mastering this decoder is a rite of passage. It proves that with a soldering iron, a schematic, and a little patience, you don’t need to spend $1,000 to hear a spaceship fly behind your head. DTS-ES 7