Hi:
I am a loyal Pass owner and fan. Nelson and Wayne and the guys (never leave Peter out; simply the best!) are the best, and so is a lot of the equipment thay make. But the Pass X1--I could never warm up to it. I tried and tried to like it. It's sexy looking and will no doubt run forever. But I have become a true believer in having tubes in the preamp. There is more dimensionality, dynamic excitement, and well, TUBE MAGIC that I could not get out of the X1; not even close. I love my Aleph 60 mono amps (bit of a cult item at this point), but the X1 just left me bored.
Good luck,
Jeffreyfranz