i shall find out soon enough. hopefully. from what i have read on the bottlehead forums so far, to be able to accommodate lower impedance phones, the output capacitors need to be beefed up and depending on the capacitor, a few resistors need to be changed out as well. need to go over that info again before i start building. if anyone would like to do a gb of sorts for the caps please keep me in mind. or let me know in case you would like me to run it.
ps. 650s otw too
now about that dac...