Can anyone tell me the root cause of not using the Din and RCA simoustaneously ? Someone said it will develop a ground loop, another one said the "unbuffered" output, someone said leaving both active will cause signals interferences...etc. In fact, I can't hear the difference maybe due to the luck of poor auditability.
I use both outputs of CD 5si to a pair of Nait 5si to drive the tweeter and mid-low separately.
I have a good DAC with dual 9038pro chips, the output of RCA and XLR are also connected in parallel in the inside circuit. The manufacturer has no clue why they cannot be connected simoustaneously, each to a Nait 5si.
The sound quality of both CD 5si and my DAC are good but the latter is better though such kind of connection may worth crucifying by the members.
Sorry but I do need your point of views.
Posted on: 22 January 2018 by hungryhalibut
If it’s not enough that Naim state in the CD player manual that the two outputs should not be used simultaneously, you should email them and ask the reason.
It’s rather bizarre to use two integrated amplifiers in the way you are doing. Have you actually tried just using one and seeing what happens?
Posted on: 22 January 2018 by Darke Bear
Naim actually listen to the result of what is possible. Yes you could have all outputs powered and working, but Naim found when you did that it did not sound as good as offering only what was needed to provide one appropriate output.
Some companies don't bother to listen and just do what the chip manufacturer says you can do. But chip manufacturers have an incentive to show their offering can do more, so that is what they would say. The product manufacturer (Naim) should verify what actually works best and offer that to their customers - I like it that Naim do this and are prepared to make a stand on what they find works.
As to 'why' - extra current-flow and internal cross-talk withing the chip may mean that having everything going at once is not best if you want the best quality. But it does not matter - just try it and use what works for you.
DB.
Posted on: 22 January 2018 by Huge
Also extra capacitative load on the output amplifier.
This always compromises the feedback loop to some extent (even if the effect is very slight, it's still there).
Not a point of view - a design fact.
