I have had one of these for, oh, about 12 years now. Searched high and low for info, but I do think I have a manual for it.
I will look and scan it if you need it emailed (assuming I really have it....)
I did send it to jon once to have it tweaked and cleaned.
I don't think I will ever get rid of it. I didn't realize it was so rare. I paired it with a Forte pre-amp and a Forte DAC, but the synergy didn't develop. Now I just drive the 55...