Hi Judith....
I too use my MkII with all-Pass Aleph P and 2 monos. Exquisite. DO RUN BALANCED, whatever you do! Even Electrocompaniet strongly recommends this...and it's not about the +6dB....
Despite highly-linear speakers in the nearfield (Parsifal Encores in an 8' triangle), this system is VERY natural, non-digital-sounding, and thus forgiving of older digital transfers WITHOUT loss of musical detail or HF air. Can't imagine the new "UP" mod could be better! Any comments from the brave?