velocityofhue
My pleasure. Oddly enough, the Pass Labs X150.8 is the only model that I have heard. I rather enjoyed the presentation and sound with an Aesthetix pre-amp, Aesthetix cd player, Thiel CS 2.4 loudspeakers and Synergistic Research cable loom (older series).
Sidebar:
A few years back I heard the Pass Labs XP-10 and XP-20 pre-amps with Parasound HCA series power amps, TAD loudspeakers, Esoteric DV-60 universal player, Silent Source cables and Wireworld Silver Electra power cords.
Happy Listening!