Let me make this simple for you....
QSC DSP30 does not increase noise.
MiniDSP does not increase noise.
DCX increases noise.
"Noise" is simple defined as that "HISS" everyone can hear with a CD or Ribbon at 1". It exists on 100% of them, if people can not hear it then they are simply deaf. Its easily measurable too, just plug any of them into an amp (don't foolish have the gain structure at 10% to just prove a point, yes we can all turn the amp completely down if there is a gain structure but that is not part of this exercise).
That is the only importance. No need to jump through hoops and do an engineering class to define "NOISE" , it is what it is. No matter the gain structure the noise increases with the DCX but not other devices. Hmmm......
There is endless threads on their outputs having this issue (please read them!!). You are the minority on this and if you really cared to prove yourself you would post in those DCX2496 threads, I suspect you would never do that because you know its easier to banter subjectively about here..
Im looking forward to your measurements but you are going to measure something complete meaningless to the topic because from the start of our debate on this you have always been thinking about it in the wrong way (wrong as in ignoring what Im talking about always). Please post those results in another thread because this thread is not about the DCX.
BTW, thanks for wasting time on the MiniDSP thread. I hope you satisfied your little fettish on this topic.
Im hope we can just get back to the MiniDSP now. (asking for a 3rd time hoping A9X isnt a complete Ahole about the topic?)