yeah...you may be onto something there - i could also try to put the MBP on the Power filter as see if it continues to happen...clearly if I were smarter I'd call an electrician to check the mains  - the lights should not be dimming if the mains box if fitted properly for my load....

I think I may have figured out why the music stops but the sync appears to still be hot...today its happened each time my Air Conditioner cranked up - SPIKE (lights dim etc.) ...which means my Weiduka Power Filter may be crap ;-(  - it too is new and not cheap.

I have not tried that yet...I searched for a place to do this and so far have not found a native MAC OS lace to do it...Each player however has something in this area - I'll look into it and try it otherwise its adios to the DU-U8s in time to meet a return deadline.   Thanks Alex

Power on wall has Ground => Weiduka Audio Power Filter AC8.8 provides 6 Euro plugs and 4 US plugs all with ground presumably.  DAC, DU-U8 and Amp are plugged into the AC8.8.  The MBP is not plugged into the Power Filter but instead to the wall.   went back to testing with Media Center 21.  AES...

Yes tnx Alex I read your PM and replied...   I've tried both USB ports on my MBP (El Capitain v10.11.2).  Tried iTunes, Pure Music and Audivarna Plus as players - also tried Media Center. Following do NOT work   1) MBP via any USB port => either U8 => via any of 3 new Mogami Gold AES => DAC...

Yeah... I read as much. I'm not having luck with the U8.   I have 2 brand new DU-U8s, 3 Mogami Gold AES cables, 1 off-brand optical cable and a brand new Gustard DAC X12, and the filtered USB cables that came with the DU and DAC. Tried each and exhausted the possible permutations. BTW all this...

115V

Hi Hgpsemaj - both links are for windows - is there a MAC version of the drivers?  thanks

Hi Alex and hgpsemaj - Thanks for speedy responses!.  I will try the links.   Yes @Alex: I was referring to your DAC approach - I see you mentioned going commercial - I'd be interested for sure!  Thanks!

A newbie..Guys I'm struggling with my experimental set - MBP El Capitain =>Breeze DU-U8 =>Gustard DACX12 via RCA to HPhone amp works. MBP El Capitain =>Breeze DU-U8 =>Gustard DACX12 via Mogami Gold XLR on AES to HPhone amp does not work nor does via Optical.  I suspect I need to load DU-US...

Hi There...been watching Head-Fi for some time and learning.  Have been buying and experimenting. Your approach seems awesome. How much would an eval or one-off (your call) be?  Sorry if I missed this nuance is there a separate LPS requirement?

Guys...Apologies for restarting this thread..I'm a new member and wanted a small forum for this question.   Background: I am starting out slowly with device purchases and experimenting but with lofty goals at the end of this journey.  In the end I wish to go TUBE Amp, TUBE PreAmp and HIFI...