I am thinking of getting some premium channels but want to know actually which channels I would get true 5.1 Dolby Digital sound on. I use the 522 and a 5.1 amp with the optical cable. I currently have the 180 plan and all 180 channels are PCM 2ch sound. I am thinking HBO/Showtime and those sorts of channels might be in DD? Then again.. DISH tech couldn't even tell me for sure . I know HBO/Show/etc do broadcast in DD but... does dish pass that on to us or strip it to save bandwidth? Someone out there must have the 522/5.1amp and premium channels to confirm or deny this? Tx !