Parasound JC-1 vs. Pass 250.5

before i bought my jc-1s was able to audition the x-250 in my system for over a month and although the pass impressed me with its speed,timing,dynamics and transparency and what some have called a certain "sparkle" on top,i was ultimately let down by what i perceived to be a "thin" harmonic presentation in the mids,(which for my listening preferences is crucial)and a hardening of the sound with higher spl,probably due to the amp going out of class a output into class ab.
as to the newer x250.5 version,haven't heard it.

Fatcat,
interesting comments;have you been able to compare the x250.5 to the larger x350.5?
if i remember correctly the older x250 sounded a bit quicker and more nimble than the x350,maybe because of fewer output devices?