Allo - streamers, DACs, bridges etc.

[octaviars]

Very interesting, thanks for sharing!

Going back to the S/PDIF v AES debate can I remind everyone that it was Devialet who said that the AES input was qualitatively better than the other inputs when connecting an external renderer or CD player. In the earlier days (up to 2013, so leading up to the launch of the 500?) the S/PDIF to AES link was recommended for linking dual monos, in fact I believe there had been plans to offer this cable with the 500 but in the end it shipped with a Transparent S/PDIF cable.

The reason given was that with the AES port you input on a transformer which allows for greater cable length among other things.

Guillaume

I really cant see how a spdif to AES3 cable could give you the benefit of having longer cables as it has to be AES to AES to get the balanced line and higher voltage that can drive longer cables and reject noise better.

It is the output that states how it will be at the end of the cable not the other way......so a digital RCA to XLR will perhaps be better than RCA to RCA but it is still a SPDIF signal entering a AES input with a transformer. If the AES input is better there must be something in the circuit in the amp that is different between AES and SPDIF handeling. 

Lots of info regarding rca and xlr cables.

http://www.rane.com/note151.html

Here is the email copied and pasted from Devialet:

Thierry Massoubre (Devialet) 
Sep 24 16:09 (CEST) 
Dear Guillaume, 
Thank you very much for your message. The Devialet 500 comes with a daisy chaining cable to link DIG OUT on the master (S/PDIF) to the AES/EBU input on the slave. 
The advantages of such a configuration is that the AES/EBU input is comparatively more qualitative; You iput on a transformer which allows greater cable length. This frees also the PRE OUT sockets on the slave allowing you to connect a pair of headphones for example. 
If you want a wired connection, try to connect to the AES/EBU input on the master. 
Best regards, 
Thierry

I know to little about this but a transformer at the input I cant really see how that affects the length of the cable when the output is still unbalanced and it is the voltage on the output that has to do with the length of the cable that is Ohms law.....

It is possible that the AES input is better but the cable thing I think that is a bit wrong. If they used AES to AES that would be another thing. 

Most AES and SPDIF inputs goes to a recieverchip that handles both AES and SPDIF something like a CS8416.

See pages 49-50 how SPDIF with rca 75 ohm and AES with XLR 110 ohm are connected to the same input chip. I dont know how or what Devialet uses in their amps but I asume it is something like this or perhaps they go straight to the A/D chip.....?

https://www.google.se/url?sa=t&source=we...bxB4XUAY-A