Master/slave link

[Mikeeo]

Hi,

I am curious about the manner in which Devialet has chosen to link the master/slave units.
Me too, as I have bombarded Dev with questions concerning this as initially there was a solution of an AES/EBU to RCA link that Dev seem to replaced with the present Crystal Cable RCA-RCA. I never got an good answer from Dev with regards to why not use the AES/EBU to AES/EBU instead and why they had such odd solution from the beginning. I also had issues with the non BNC connecting possibility but then the answer from Dev was that I could use an BNC to RCA converter obviously missing my point with the question. In that same answer I had from Dev they say it will be 'impossible' to have true 75 ohm however they say it is not of importance indicating that Dev have some gizmo inside for impedance correction, however they did not confirm that either.

1. Since they are linked via a digital connection, wouldn't the sound of the slave be dependent on the quality/flavour of the digital interconnect used?
My point too! I can still hear differences between the units, and I tried swopping the channels with the result of that the slave still sounding a bit less than the master. I still relate this to 'burn in' as my 200 took some 500 hours to settle. But if it will not change I will for sure 'blame' the digi connection or the slave it self. I will for sure play around with cable options to rule out if cable gives a 'flavor' or it is the technology in the units that limits things.

2. Plus, Devialet has chosen to use RCAs instead of BNCs so there may be impedance mismatches?
See my answer above!

3. For dual mono DACs, there is usually a clock sync connection between them. In this case, unless there is a clock sync function implemented by Devialet, it would appear that the slave has to extract the clock from the signal sent by the master, leading to potential timing issues?
It would be very interesting to know more about this from Devialet! Typically Devialet answer very correct and technically good BUT when something is not under their control or they are aware about some less good issues they usually answer in an avoided way saying it doesn't matter for sound quality.
The reason for this answer I start to believe that the see their products as lifestyle products and not as HiFi/Hi End units which is not so smart that most of us owners seem to be hunters for optimal fidelity hence we want to optimize and understand.

4. With AIR, Devialet could have chosen allow data to be streamed to both master/slave units either wirelessly or wired. If wired, then if the same type of ethernet cable were used for both units, the "flavour" would be the same. This does not solve the clock sync issues though.

/Mike