Not sure if it worth the trouble and shipping costs, but if you really want to, I should be able to provide you V6s Classic & Vivid.
Almost 0.5 Ohms I measured as well, on PLAY, PLAYMATE and FUN, at around 1KHz. @amirm measured about the same on PLAY.
I can't find my scope measurements right now, but I think that without load AC ripple & noise was at most 1mV RMS; I also remember that my FUN had +/-17V on the opamps, but please wait until I'll find my measurement or I'll need to do them again on next weekend.
Cool! So my output impedance measurement is not flawed.
As for the Burson V6s probably not worth the trouble, thanks a lot for the offer! I will look around locally if any of my audiophile friends have them.
I will check again the ripple noise of the power supply, but not able to supply more than 650 mA is way out of spec. Hopefully this is only my case.