choose a DAC to complete my system



acoustic zen silver reference ii XLR interconnect
Cardas Clear speaker cable
wireworld platinum usb cable
Focal Electra 1038 be II
Pass labs X350.5
Pass labs Xp10 pre
Oppo BDP-105
PC computer

i'm not happy about the sound i'm getting
i'm not sure why.
maybe it's better to replace the PRE ?
maybe to get Apple computer to replace the PC?

for DAC i though about one of those:
Luxman DA-06 (Japan model cost $3000 but i don't know if it will work in the US? Japan using 100V
Meitner Audio MA-1 , found 6 month old.

or other models?

Thanks
pelo911
You should describe what you don't like about your current system sound. It would also be useful to describe your room and speaker/listener placement. How is your PC connected to the rest of your system?

Best Kept secret BMC "pure dac" you owe me for this tip
believe me dont let the $1690 price tag fool you!
I have heard the same about the BMC Pure DAC on another forum. Any reviews in the work? Except for one user review from Asia, I could not find much information on this DAC.
what are you using as a DAC now for the PC?? if you are just running it direct from the PC soundcard to your preamp almost ANYTHING would sound better.

also if your PC is a secondary source (meaning the Oppo is your main choice) I would spend no where NEAR $3k on a DAC ... the AudioQuest Dragonfly or something in that price range would probably suffice

as for your pre, I do not see that as a "weak link" in your system