You are definitely not the only one alone.
I purchased my unit (Modwright sony 9100ES signature with P.S. 9.0, SWL 9.0 SE with tube, and Ciaudio d200) around mid of February. The fuse for P.S. 9.0 (the power supply for sony 9100es) blew off. I quickly asked Dan about this issue and received tube replacement from Dan around one week. According to Dan, he believed that the tube probably went wrong. I replaced the tube and fuse last night. The unit is working again. I played it maybe 2~3 hours last night and everything was fine. I left it on for another 2~3 hours this morning and then the fuse blew again. I replaced my last fuse from Dan and it went off again. I am not sure what is the problem. If the tube is the issue, then my replacement tube only last 5~6 hours... that is outrageous to me. First, I am not a technical person. I expect that at this kind of price level (7k+), I should not worry about this kind of technical issue... either bad tube or something other things. I am still waiting for Dan's reply (since it is already weekend... probably would not hear back from him anytime soon).
I believe that Dan will resolve this issue eventually. It has been a great expereince to do busienss with him. However, if many of us have similar issues, maybe Dan should start to pay more attention to this issue and fix it proactively. It will be very frusturing if problem keeps coming out, but there is not obvious solution.
Maybe this kind of issues happen often to experienced users. However, for a novice like me, it is really not a good and very expensive experience.