Koestner: I'm currently using the eps2: little brother to your speaker, with the same rated sensitivity. I emailed with both Pass and Reno HiFi about this amp choice, and both strongly recommended the XA30.5. But my room has a considerably smaller footprint than yours, and I listen to mostly small scale music, mostly fairly quietly (65-75db, peaks south of 85). I expect both variables could affect your choice. But as others said, I'd contact Pass and Revo: helpful folks.
John
John