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No because I don’t have it anymore. I gave it to my brother who managed to "lose" it. I wonder how it’s possible to lose a 20kg CD player… That said, it’s the one player with which I started experimenting test CDs for the purpose of measurements. And I was using the digital input to compare...

Blu-Ray players have to respect the norm of outputting « CD Audio » resolution at best via their uncrypted digital outputs (SPDIF). Sometimes manufacturers do that by using an ASRC that modifies the digital data, even if the source is an audio CD. Risk is mainly about inter sample overs.

Only a few offered this feature indeed, like the Denon DVD-A1:

@Vintage02 : Thanks for sharing. I failed too (Foobar with ABX pluging). You said they were taken random, but would you have a recording with the worst and best of what you published?

This is a draft. The BurrBrown PCM64 is a rare R2R 18bits DAC that was found in few high-end CD players at the end of the 80s'. It is deviated from the DAC729 which was intended to be used in instrument type of devices because of its high precision (claimed distorsion at max 0.0009%). The PCM64...

Hi, Warm, no I don’t think. For that you’d need the FR to show significant deviations, and it was not the case. On a THD perspective, all were low enough (-100dBr or so) to remain hidden into musical content. Have a look at this review of the Rotel B 266s which was using a TDA1541A in a...

It had no sound, and that was not the only DAC at the time. BTW, it was only a DAC, and required a companion chip for the oversampling and filtering (most being the Philips SAA7220, but not only). And if a sound was to be attributed to the TDA1541, that would have been the one of the...

Maybe an issue in 800km that separated it from me. But I doubt. The previous owner sent me a video of this output being connected and it played music. That said, on this video, he switched between the stock coax output and this one. And I saw he had to turn twice the connector to get sound...

Indeed, some of the text got dropped, I made mistakes before publishing. Thanks for telling me, I added a mention.

@Scytales Merci! I was too fast and got it wrong. I updated the text from your input. I can’t show you anything out of the additional coax output. I see only noise coming out of it, when I see something. It’s a first. I might analyze it with a scope, but I don’t think it’s worth my time. Better...

Hello Everyone, This is a review and detailed measurements of the Sony CDP-557ESD CD Player, also known as the Sony CDP-ESD707 in US and Canada. I already reviewed the little brother Sony CDP-337ESD, so that will be interesting to compare the two. Did Sony achieve to create a better CD...

I'd say the Denon DCD-900NE. Very stable digital output because of the very stable clock (0.5ppm), when used as a transport ;) There would be many other candidates, I guess, but I did not test them.

It’s more than ok, this forum is very open. I recently joined a French forum and got banned after a week. Reason is that I posted an article from @DonH56 here about amplifiers’ damping factor. And someone replied that ASR was non-sense, that @amirm was an incompetent "Emir", and that the...

Hello Everyone, I managed to enter the setup menu of the S7700 using a converter to HDMI, and so I was able to test the slow filter (don't use) and the Attenuation function (that, you can use). I updated the initial post and I wanted to add here the standard dashboard, with the attenuation set...

And about random OPA rolling and impact on FR, I found 5min to overslay 12 of the 90+ measurements I performed some time ago (with different combinations of OPA): That was not in an amplifier, I must say, but in a low price DAC (OPA rolling possible in the I/V and LPF slots). Bandwidth was...

I had a good laugh, thanks. I’ll be eagerly waiting for a future Zetetic DAC, and I’ll ask «Does it taste good?». I’ll then cook it in a zillion different ways, if necessary, to reply (positively) to the question. I wonder if it’d be best to stir or fry the OPamps. I’m sure measurements will...

Nope, I did not say that. Just in the context of the OPAmp comparison, all you need is what you got from Amir, since it is what you challenged. Like I said before, I previously tested 96 combinations of OPamp and ran 88 measurements for each (44 per channel: FR, phase, SINAD from 0dBFS down to...

I get your point (now) ;)

Because there’s no need. A sweep of THD+N is indeed enough, with couple of FFTs analysis, which is what you got. Like I said before, besides tiny variations in noise and distortion, there’s not much see and nothing to hear.

I did it on 96 different combinations of OPamps in a DAC (between IV and LPF functions). The FR is one of those measurements that saw no differences (together with phase, jitter, pitch, and some others). What changes are distortions and noise, their nature, quantity, crosstalk, … Between the...