High end bookshelf speakers for Small room

Definitely the Sonus Faber Maxima Amator. Though a floorstander, it is very slim, only a couple inches taller than a bookshelf on stands and takes up less floor space.  You won’t need subs (which will clutter up and may overload the room) with these as they will do a hearty low C (32.7 Hz).  More neutral than the other SF standmounts mentioned here without losing the gorgeousness of their smaller brethren.  It mates beautifully with Luxman integrateds as my experience with my L-590AxII will attest.  And the speakers are stunningly beautiful.

I have a pair of Dynaudio Heritage specials w a rels510 in room same size with furniture powered by a Luxman 595ase, Auralic Aires g2.2. Chord Mscaler to Chord 

Qutest and  it impresses me every day. This is my home office system and it’s I credibly musical and engaging  w airy soundstage. 

For a compact room, the Dutch & Dutch 8c speakers, which are specifically designed to be placed close to the wall, would be a solid choice among all class-A recommendations. Considering your excellent digital front-end setup, the D&D 8c could allow you to streamline your system by moving the Luxman out of the way, creating more space for your music listening. In a smaller space, simplicity can truly enhance the beauty of your setup. 

For its sonical characteristics, carefully review the followings:

https://www.stereophile.com/content/dutch-dutch-8c-active-loudspeaker-system

https://www.erinsaudiocorner.com/loudspeakers/dutch_dutch_8c/

I be not heard many of the speakers mentioned but did really enjoy the TAD compact Evolutions the couple times I listen to them. Incredibly full range & “live music”  sounding for such a small speaker. They’re probably about the most pricey of those mentioned but if you can afford them, I would try to give them a listen. 

I can’t believe that no one has mentioned the small Acoras. They are spectacular, my personal best of show at the 2019 Capital Audiofest.