Originally Posted by rnrgagne
No, they don't sound the same at all; Optical starts with an O and is three syllables long and Coax starts with a hard C and is only two syllables long - very different.....
However, I made sure that the THX set-up on the Sony (Large fronts 6' from listening position, center on and surrounds off) were the same as the THX set-up on the M15 and there is a recognizable difference between 7.1 analog input and the Optical and Digital Coax (just checked to be sure). I need more amplification for the Analog inputs but once I "normalize" the two, the digital connections are clearly - actually - more than clearly, lacking. Over the optical connection, it sounds good but compared to the analog inputs: it sounds slightly
like the speaker is "sitting in a bathtub" (highly-technical term right there
) - highs not high or detailed and lows lack definition.
I wouldn't have expected this at first either but an earlier poster, DougWinsor, suggested that I use the analog outputs from the Sony and he was right on the money.
If I had to guess, I would say that it's either (a) because of poor implementation on Sony's side for the digital audio outputs as they probably figure that end-users will either be using HDMI for audio or analog if they have "legacy," high-SQ-biased equipment, or (b), DRM/encryption-free, uncompressed, digital audio scares the hell out of the studios