Originally Posted by ti-triodes
You're correlating that flat output from a DAC means it sounds good, and any deviation means the DAC is faulty. It just means the DAC measures flat.
No. I didn't make any correlation that it "sounds good". The topic was raised that the 83 had emphasis in the treble range. I suggested there was something wrong with the DAC or analog output that caused it. Of course, no measurements came up backing up this emphasis in the treble on the 83 - not even from Oppo. IIRC (someone stomp on me if I am wrong) a flat output is a design goal with DAC's.
Flat response has never meant anything sounds good. In fact the flatter something sounds, the worse it will sound to our analog ears.
You're suggesting that this is a universally accepted fact, and I disagree. I'd bet you'd find many more who would disagree too.
If you mean to suggest that there are those who find the distortions and other issues related with Vinyl or tube amps pleasing, I would agree with that wholeheartedly.
But that is not everyone. As a matter of fact, here's a little blurb about research that is being done by Sean Olive @ Harman;
If you mean to suggest that people enjoy different kinds of speakers and how they 'color' the sound, and how they may not want 'flat' performance, I would agree with that wholeheartedly as well. (despite what I posted above)
But we're talking about DAC's and the analog output of a disc player. And quite frankly I wanted (and want) to stay on topic.
I'm unaware of a DAC that is designed to do anything other than reproduce a signal as flat as a pancake. I imagine there might be an esoteric exception to this.
The DAC's in the audio grade players are tweaked to remove things that aren't measured, like jitter. Jitter can be heard.
It can be heard? Where's the supporting evidence, like from an AES paper or ABX DBT or something other than subjective opinion?