I totally disagree with your point about timing. To me (and in my experience), this is the key difference between the two technologies; R-2R is simply more musical, because it seems to be better at conveying rhythmic complexities, that DS even just misses. Since changing to r2r I've even, on one occasion (so far), noticed a more complex tune in some percussion, on a very familiar track (Paranoid Android), that I'd only previously noticed as a simpler beat.
I'm not saying that it's normal for equipment to change the timing of the music, but I certainly think that different components, even cables, can change the way that the music is perceived, and that includes the timing. I found that R-2R and D-S are extreme examples of this.
Regarding this ridiculous, quoting and re-quoting long posts, discussion about the meaning of a bl**dy adjective:
Firstly, I think that unless someone is trying to state something a some kind of proven fact, every written word is opinion; I think it's more of an onus to state, to justify, why something is a fact, rather than needing to clarify that it's just a personal opinion. (Although, sometimes it's helpful to soften the tone or your words.)
You say you disagree with my statement - but, from your explanation, it seems more like you do in fact agree with my point.
I agree entirely with you that a given technology can in fact make what you refer to as "the rhythmic complexities of the music" easier or more difficult to hear. (I find that electrostatic headphones do a better job of letting me hear subtle details than dynamic headphones and planars- at least all of the ones I've heard so far. I'm not convinced that R2R DACs do a better job of this than D-S DACs, although the time errors introduced by oversampling seem like they might have a negative effect on it.) I also agree that pretty much everything anyone says is "opinion" in some form or another - unless it is a simple statement of objective facts (numbers).
However, a basic requirement of any sort of intelligent discussion is that everyone involved be talking about the same thing, and using terms with a meaning that is agreed upon. If we're going to have an intelligent discussion about steak, even one that involves your opinion and mine about which restaurant does a better job of preparing steak, it isn't going to be very productive unless we both agree up front that "steak" is "cooked dead cow meat" and that "well done" means to cook it more than "rare". Likewise, your statement that you believe that certain types of DACs "do a better job of conveying the rhythmic complexities of the music" is concise, and I can tell what you mean - it makes
sense. You've also stated that you believe it affects
how we perceive timing, which also makes perfect sense. This allows us to have an intelligent conversation about it.
However, that isn't at all the case when someone says "Amplifier A messes up the rhythm and pace of the music". Using the meanings in any standard English dictionary, that sentence is a claim that Amplifier A alters the timing of the signal - which we both know is simply not likely to be true. The words "rhythm" and "pace" both very specifically refer to timing. Therefore, whatever he
MEANT to say, what he in fact
DID say is that Amplifier A alters the actual timing of the sound. And, since we all know that amplifiers don't actually introduce audible delays, we both know that what he said simply isn't true - it
doesn't make sense. Saying that it
FEELS faster to go 50 mph on a motorcycle than in a car is a perfectly valid statement, and conveys actual facts about riding motorcycles; saying that a motorcycle going 50 mph is "faster" than a car going 50 mph is simply untrue - and conveys no useful meaning.
Going back to my particular example, your statement that certain types of DACs "do a better job of conveying the rhythmic complexities of the music" is useful information. Since we know that the actual "base timing" of the signal doesn't change, we can then go on and try intelligently to figure out why one type of DAC might alter the signal in such a way as to make it seem like there is a difference of that type. Since we have all that information, we can avoid wasting time measuring the time between the drumbeats to see if they're really being slowed down by one of the DACs - because we both know that's not what we're talking about.
I guess I have a particular sensitivity to this sort of thing because I have a very technical background. The current "audiophile world" seems to have developed a nasty habit of making up terms, or re-defining terms that already have perfectly well known meanings. Sometimes this probably happens because the person involved simply doesn't know any better (a tape recorder actually could alter the rhythm of a piece of music - if it had poor speed accuracy, but an amplifier cannot). Other times it happens because of a reasonable attempt to describe something unknown using known terms (like trying to describe how steak tastes with some spice added that you're not familiar with). However, other times, it is a pretty obvious transparent attempt to add "mystique" to things - for various reasons. (If you're
SELLING a premium-priced tube, it sounds a lot more "significant" to say that it sounds "smoother and darker" than to say that it has 2 pF more grid-to-cathode-capacitance than the one that costs 1/10 as much. It may even make what I'm trying to convey easier to understand to non-technical customers. However, it also helps me sell you my expensive tube - by
NOT providing the information you could use to find a cheaper tube that sounds the same because it has similar electrical characteristics.)
This is the part that bugs me. If I were into tube rolling (which I'm not), and I found some particular brand of ridiculously expensive tube that sounded better than all the rest in my particular amplifier, the next thing I would do would be to make electrical measurements of that tube... so I could find cheaper tubes that have the same electrical characteristics, which would enable me to get the exact same performance for a lot less money. Instead, what I find is that many people seem to actually prefer to spend absurd amounts of money on mystique... and pretend as if "there's something else going on".
From a technical perspective, all DACs are
SUPPOSED to do the precise same thing. Two "perfect DACs" would sound exactly the same - regardless of what technology they use. Therefore, if you do hear a difference, then one or both of them must be doing something wrong. It only makes sense that, that being the case, we can figure out what that something is - and redesign
EVERY DAC out there to avoid doing it. (If we get that right, then, maybe, in a year or two, every $2 D-S DAC will sound just like your favorite R2R DAC - which will save us all a lot of money... or maybe, instead, there will be some new technology altogether - that combines the low cost of D-S DACs with the sound of R2R DACs).