Was working to have a local techman for w4s here, it turns out they were arranging one in Singapore. If it does pan out, dac2 owners would be in for a treat as mods can be done nearby...
I like the idea the w4s incorporated on their products especially the ability to be upgraded instead of getting phased out for a new model.
W4s seems to pick the better materials too, like the ess9018 sabre chip as well as the femto crystal which are the best as of this time.