DTSX dts x neural x sound optically from a Sony 4k tv. Not true dts x
Dts x through the audio return channel. Completely different through a device such as the ps4 because of the direct connection hdmi between the 2. Connecting through the smart tv, gives off an analog signal converted. Straight from the ps4 or smart blu ray player it is most likely pcm Bitstream or mix. At best a Dolby 5.1 digital signal or true dts HD ma signal of course.