Question: What is SRS TruSurround Hd on my Vizio 36 Inch Flat Screen Tv?
I wanted to know should it be on or off its currently on off?
It makes the audio sound more realistic. It may only work when watching certain content, like DVDs or Blu-Ray discs. You can try turning it on and off in the middle of a show or a movie to see if you notice any difference, and leave it set to whichever setting you prefer.
It's a sound matrix that supposedly makes the sound more surroundish sounding. Try it and see what you think, you may like it and it should be adjustable in the tv's sound settings so you can play with the sound a little. Flat screens have bad sound usually. If you find you want better sound and don't want a whole system, check out soundbars.