using Cignal via dish sir. Yes Dolby sounds na sila with some HD channels, haven't tried using the HT with it yet so di ko pa masabi if maganda sounds.
Dolby Digital and Dolby Digital Plus meaning kaya i-decode ang 7.1 channels.
I use it once in a while sa movies and the NBA, knowing fully well that not all channels are really equipped with true Dolby Digital sound. Sa HBO, iba pa rin pag bluray yun source ko. Mas buo yun sound. Sa NBA naman, hmmm, mas maganda pa rin yun tunog ng NBA 2k17 ng anak ko.. mas rinig mo yun talbog ng bola at swish ng net. But hey, it's better than TV. I'm sure the NBA Finals will be a treat.
For me, the good channels with dolby surround are Discovery, Nat Geo, History and CNN. Buo yun sound and close to real dolby.