Pass Labs xa - .5 amps

I used a Nordost Hemindall speaker cable with Focal Electra 906 and Pass X2 pre. and run very well, but im searching a Xlr cable between pre and power, ideas?

Im think in focal micro utopia but are a 89 db what do you think?

At the moment have a loaner XA 30.5 hooked up to my Lohengrin.
with 95 Db it get's to really excessive spl's.
just amazing what this little Pass does concerning control and sheer power.
very new so cannot make claims on musicality, but i like it. remember it's all in the match.

Anyone using this XA 30.5 with 4 Ohms (86DB) spekers?
I am highly expected your suggestion becoz am planned to purchase the same for my Dynaudio Speakers.

Thanks for the suggestion and presume 280 sq.ft room can be fine...is it?