Your point is a very good one. I just checked my RX-V375 and I remember when I first got it, despite having worked professionally in audio for over twenty years, it took a little effort until I realized the surround mode called "STRAIGHT" meant I could hear Dolby Digital 5.1 unadulterated from my cable box, etc., without further processing. I wish it were more clear than that since any average bloke might very well select "STANDARD", in their attempt to achieve the same thing, no?
Anyway, to answer your very good question, pressing the button "Info" will eventually toggle you to the words "Audio Decoder", which after a second or so automatically changes to: "Dolby Digital" with the little Yamaha logo above it, "Cinema DSP", properly extinguished.
In A/V reproduction accuracy, there IS no concept of "accounting for personal taste/preference". As art consumers we don't "pick" the level of bass, nor the tint/brightness of a scene's sky, any more than we pick the ending of a novel or Mona Lisa's type of smile. "High fidelity" means "high truthfulness", faithful to the original artist's intent: an unmodified, neutral, accurate copy of the original master, ideally being exact and with no discernable alterations, aka "transparency".
Last edited by m. zillch; 08-12-2014 at 12:44 PM.