Speakers for Atma Sphere M60 mk3

Hi! I'm thinking about tubes.... an Atma Sphere M60 mk3 maybe... (Its within my budget)

What kind of speakers are they able to drive to decent levels (classical, jazz)?

Today I have a pair of SF Elipsas SE. I think they could be too much for the M60.

I'm just curious, what are you using with the M60? What do you recommend?

Room is 26 x 14 ft ceiling is about 9

Thanks!