If it's purely an engineering challenge why bother designing yet another DAC?

For the record, I greatly respect the engineering and manufacturing quality of the Benchmark products, and I read about everything that their principal engineer publishes.
However, this comparison appears to be between the Sabre series of DA's vs the latest offering from a competing manufacturer, and the latest offering won out. That's what we call 'progress' in audio design.
 
Unfortunately, it takes at least one (better, two or more) pair(s) of ears that attempt to seriously evaluate a sonic difference between to audio components, after adjusting for frequency differences, polarity, and level so that the comparison can be fair. This was originally Richard Heyser's criterion, as he told to me, 50 years ago or so.

A difference is often perceived as better, that's true...........for a while.
 
abraxalito,

It seems to me that even if (accepted for the sake of argument) their perception is 100% not rooted in reality its still the perception they experience. So are you saying they perceived something but did not experience that (delusional) perception? If so that seems to me contradictory, but I may be missing something.

What they think seems irrelevant here, we're just dealing with what they perceive.

To me, what I perceive is my reality. Not to say that it corresponds with 'reality' though as I admit I might be subject to delusion (in your definition of it).

Right (excluding the 'what I think' bit, that's beside the point). So back to my original question - how do you know those persons Markw4 referred to did not experience what they said they experienced? (Even if it was delusional).

It seems to me that you have far better philosophical skills than circuit design skills.

I don`t know how "illusion, delusion, hallucination" are defined in psychology and I am not especially curious about it either, but in supplying our reality, the brain normally creates impressions without any sensory input. We have no (some kind of exclusive direct) access to the material world.

Yes, "proof" is an utterly misplaced term here.
 
It seems to me that you have far better philosophical skills than circuit design skills.

What's your exposure to my circuit design skills? I have a blog on DIYA, have you read that?

I don`t know how "illusion, delusion, hallucination" are defined in psychology and I am not especially curious about it either, but in supplying our reality, the brain normally creates impressions without any sensory input. We have no (some kind of exclusive direct) access to the material world.

Quite so, hence its a misnomer to call it a 'material world' - in truth we don't know what form it takes. But we do know our reality is a material one.

Yes, "proof" is an utterly misplaced term here.

As textbook an example of a deflection (ego defense) as any in my interactions with @soundbloke.