Hi Jafant,
The Wireworld cables are sounding great with the Luxman DA-06 DAC particularly the Silver Electra 7 at it neutralized the warmth of the DAC by providing a more open sound with better clarity and detail in the midrange and treble. With the Chord DAC, the Acrolink cable works better so it’s a matter of matching the right cord to the right component.
Yes, the Marten Duke 2 which I have is very nice. They displaced the Harbeth SHL5+ from the main system last year.