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WHICH PROVIDES THE BEST SURROUND EXPERIENCE? AND HOW ARE BOTH DIFFERENT FROM EACH OTHER?
It's something like "Hey, there are Windows and Mac OS, which one is better?"
Dolby speaker is powered by Dolby. TT suround is made by CyberLink. Both of them aims to emulate stereo sound as surround sound feeling on 2ch stereo speakers.
I think their differences are not explicit, but just made by 2 different companies. The feeling of sound quality is sort of subjective depending on different individuals.
Just try which one fits your ears.