Pass Labs XP32 or XP22?

Look elsewhere. Pass amplification is fantastic...their preamps are anemic and not terribly musical, in my experience. I paired my XA60.8's first with an XP20, then an XP30, and was let down considerably with each "step up". I worked with Aric at Aric Audio on a bespoke tube preamp and those Pass amps sang like never before. 

Admittedly, my comment above might have been the slightest of plugs for Aric and his gear. But my personal advice to pair Pass Class A amps with a well curated tube preamp, was my intended point. Don't make the mistake that I did in assuming that the symmetry of pairing a Pass amp(s) with a Pass preamp is the best path to sonic nirvana. You should call Aric, however...