Thanks a lot @kalbee, @agentxxl. Let's just simplify this issue a bit. What happens when you plug your E17 to your computer SPDIF, and try to watch a dts/dolby encoded film ? Is the movie performance satisfactory ?

Quote: Hmm. I've read about dts encoding issues that's why i wanted to ask, my main goal is using  optical/coax for the sound, fiio seems perfect for this matter.   If i plug my headphone through E17 and toslink to my tv ( which has an internal media player for movies) will i have dts...

Hi guys,   I've recently bought HD 558, i'm planning to use it for home theater. Using E17 as dac, and plugging my tv via optical seemed like a good idea.   Is it practical or should i consider another amp ? Thanks.