After demo period, I have made the following observations concerning the Pass Labs X1 vs XP-20:
Pros:
Cons:
So on balance, I will keep the Pass Labs XP-20. Quality sonics and performance trump loudness and looks.
Pros:
- Better sound: I think the XP-20 is clearly better than the X1 with regard to transparency, bass definition/power and upper frequency sparkle (snares and cymbals in particular) most likely the result of its much better overall blackness/quietness.
- Synergy: It feels that the XP-20 is a better partner with the XA100.8 than the X1 was. I felt that the XA60.5 had better under frequency and placed a glow on female vocals which both the XA100.5 and XA100.8, although good, couldn't match. The XP20 seems to allow the XA100.8 to sing more freely and gaining ground on the specialness of the XA60.5.
- Better Design: The remote is night and day better than the beautiful yet heavy and awkward X1 remote.
Cons:
- Limited Absolute Gain: I would have imagine the gain would have been higher as well. The X1 in high gain mode seems to produce a few more SPLs out of the X100.8 and Magnepans. That's really not that significant given that I rarely push my set up beyond comfortable listening. The high gain seemed a touch less transparent than the low gain mode. With the XP20, I never notice any difference at any volume setting. Unless I'm mistaken the earliest XP20 models had different low and high gain but was then incorporated into a single mode.
- Aesthetics: I wish that the casework and footprint were a bit more like the X-Ono.
So on balance, I will keep the Pass Labs XP-20. Quality sonics and performance trump loudness and looks.