Are Pass Labs amps good at low volume levels?

I am considering the Pass X250.5/8. Nearly all amps I have tried aside from the Mark Levinson 532H sounds like something is missing at low volume levels. The Levinson manages to sound great and not feel like I'm missing anything other than the bass.

I am considering an upgrade from Levinson to Pass but am curious how it handles low volume listening as it seems many amps require a medium or high volume level to sound their best.