My question really didn't have anything to do with the quality of the XA30.5, only the Bloom that I got from it.
It probably would have been best if I hadn't mentioned the amp. I did it, not thinking, because that's where I had the Bloom and I really liked that part of the sound.
I didn't take you to be questioning the quality of the XA30.5, and even if you had been, it's no big deal. Nothing is perfect, and it's just stuff anyway. ;-) My comments were intended to offer the perspective of a person familiar with the XA30.5, not to defend it from any possible criticism.
FWIW, I'm guessing that the bloom you heard with the Pass amp in your system was a consequence of its interaction with other components, rather than being an intrinsic characteristic of the amp. But that may be academic at this point.
Bryon