The poor FR of the Adcom GCD-575 is probably the reason why you could tell them apart.Two examples.
Recent , Aune s16- Pacific Valve 62 - Smsl su8.
Older, Adcom 575 - Eastern Electric mini max. - Mhdt labs.
The poor FR of the Adcom GCD-575 is probably the reason why you could tell them apart.Two examples.
Recent , Aune s16- Pacific Valve 62 - Smsl su8.
Older, Adcom 575 - Eastern Electric mini max. - Mhdt labs.
btw where is the measurement from?The poor FR of the Adcom GCD-575 is probably the reason why you could tell them apart.
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https://www.stereophile.com/content/adcom-gcd-575-cd-player-measurementsbtw where is the measurement from?
Thank you.
Two examples.
Recent , Aune s16- Pacific Valve 62 - Smsl su8.
Older, Adcom 575 - Eastern Electric mini max. - Mhdt labs.
imo the newer ess is better than the older one.
I left out different Ifi dacs, micro and idac2, all with the chip that Thorsten uses. I tend to like them better than Ess dacs.
ymmv
This was not one test at one time, but several. Done different times with different friends AB test blind volume matched. No, I could not reliably tell the difference between DS dacs.Thanks.
So for example, you were able to pick a difference between Aune s16 and SMSL SU8 under controlled conditions? Or you were doing an ABC-X test with 3 DACs and were able to pick differences between all 3?
Could you give a little more info about your test setup and method please?
There is no such thing. It is a made up thing by people who don't know how to perform controlled listening tests. If they did that, they would not hear any such thing!
So tell is about this. Which dacs were audibly different ? We're you using phones or speakers?Beg to differ. I've done double-blinded psychoacoustically sound (anchored) tests on this. A couple of local people who have auditorily far more accurate than I am, can actually detect similarly measuring AMPS and DACS under such conditions. And one of the description one reviewer often uses for certain DACs is "harshness" or "glare" and these units measure extremely well under AP gear (everything below threshold of audibility accodring to psychoacoustics). Still they can do it. I don't how or why.
Then again, I've done double blind for high end enthusiasts on original 44kHz/16-bit cd recordings vs 128kbit VBR mp3 and those high end enthusiasts couldn't distinguish the two from each other on their own systems (they had plenty of time).
What is the technical reason for this, I don't know.
However, the field of psychoacoustics is still advancing, esp. in regards to IMD and HD inside the ear and how those can sometimes mask or attenuate certain type of artifacts in signals. We don't know as much about hearing as we know about technical audio signal measurements, and we cannot (yet) accurately measure the subjectively filtered signal at the inner ear or auditory cortex level. Thus, we don't know yet everything we should measure in terms of audio equipment, to perfectly correlate with psychoacoustic evaluations (blinded). Therefor, many manufacturers are still forced to use also psychoacoustic evaluations as one of their design guidance tools, as they cannot only use technical measurements to guide their designs.
Just because we cannot yet measure it, doesn't mean it doesn't exist, esp. if (even only a few) people can accurately distinguish it.
So tell is about this. Which dacs were audibly different ? We're you using phones or speakers?
Looks "warm" and "analog" to me.The poor FR of the Adcom GCD-575 is probably the reason why you could tell them apart.
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The people who were there can correct me if I'm wrong, but my understanding is that the Sony PCM adapters were often used for early A/D, and they were limited to 14-bit audio with a manually-adjusted DC offset (for 1st gen models). Add in the early days of filtering (brick wall), oversampling (NOS, 4x), and CDs with pre-emphasis flags that not all home CD players knew how to interpret and you certainly had a recipe for strange things to happen.
...Perhaps @restorer-john has one sequestered away . . .
No, I don't have any of the early PCM processors in my storerooms, only several DAT recorders. I had a few uMatic machines and PCM-501es at one point, but they are really no fun to keep going. They are long gone.