Well I'm certainly not JA but my theory on this topic is that the shorter signal path and fewer components inline the better. This is assuming the DAC/PRE can provide enough output voltage to directly feed the device you are attempting to drive to it's maximum potential without overloading that component with too many volts. If you start with a well measured DAC/PRE to begin with such as the DAC1 then everything else in line is just expensive pork.

   Hello kds

   I've tried running my DAC direct into my Levinson amp and got a more direct sound , but harder and brittler . Reintroducing the Ayre KX-R gave the system a warmer smoother less fatiguing sound . Don't put to much stock in measurements , they can tell you if a product was designed with integrity but they won't tell you what a product or combination of products sound like .

                                                                                                                                                                  Regards  Tim