...the XA is just sweet/rich side of neutral and what it does like tubes is the openness. Vocals are rich to me.Well, it's a matter of definition and personal perception, and ours seem to differ.
Acurus (Threads | Answers | This Thread)
Regardless, neither of us has a clue how the OP perceives midrange warmth/bloom, and richness/sweetness.
If he's interested in experimenting with an XA series Pass amp, there are easy ways to hear one in his system, but based on his original post, I am doubtful that a Pass amp fits his budget requirement.