I owned the P5 for about a year. I completely agree with Mr/Ms Sutts. The unit is very lean. I also found it to be less resolving and emotionally uninvolving than others I have owned. For example I found the Joule-Electra to be a far superior pre as well as the now discontinued (but still available on the used market) Pass ALeph P. I have not heard any of the Pass X series preamps.
Mike
Mike