I'd say your best bet is an older high end DAC, maybe an old ML or Theta DAC or something that is based on a ladder architexture, old Philips NOS TDA DAC for example. Its perhaps the only solution for digititus that I can think of.
Definitely not a Wolfson chipset though, almost every Wolfson implementation I've heard so far scored high on the digititus index, not even the Perfect Wave DAC 2 managed to fully mask it, but it sure was dynamic and detailed! The Rotel RCD-12 had me reaching for my ear plugs as did the Emotiva XDA-2. The Rega DAC seems to mask it well, but at the expense of outright detail where the Concero bested it. Most Burr Brown DACs also feature a high degree of digititus..
I don't know if one can source Metrum DACs locally, but sounds like the only solution that will work for you? My Concero DAC is also pretty balanced sounding, whilst keeping digititus in check if you are keen on borrowing it. Did you demo the Yulong DA8, what did you think of it?