It is true, it is all about varying grades of chalk and cheese. I am not a hair-splitting audiophool, just a musician in search of the lost chord. The 1545 does this "thing" with mid-register instruments that sounds, or is interpreted by my hearing cortex, as "correct."
As an anecdote, I am cursed with perfect pitch. I find with NON OS Dac's I can hit the key signature correctly ~without fail every time, however, with the output of my DVD player, it is not quite so apparent. Just a psychoacoustic anomaly really, (or is it?) but I also wouldn't use a NON OS DAC as my only digital sense-maker. It seems complex material, really complex stuff, like Tchaikovsky No 5, or complex stuff that really smokes, like the high minded Brit Prog of the mid 70's, --the upsampling method seems to get the nod. Otherwise, most seem to find this way is actually a handicap. NON OS would be my singular choice. With tubes it makes the best sense of all. With the Signature 30, the result is sublime, and from somewhere else entirely, not at all a sound you would ever find in an audio salon. It is decidedly NON HI FI. Just the music. Just the facts.
