spatial audio m3 or tekton perfect set

I recommend you to try tube amplifier with Zu Dws rather than changing speaker.

Rogue Crouns Magmun II(used) is a good starting point if you play loud or your listening room is big.

If you don’t play loud, you can try 300B SET amp.

https://www.audiogon.com/listings/lis96a90-dared-audio-vp300b-tube

https://www.audiogon.com/listings/lis9cjib-sun-audio-sv-300be-tube

My favorite tube amplifier is Line Magnetic 508 or 805 48W SET amplifier which give very refined sound with enough bass and headroom.

Thomas

Recently at Axpona heard the Spatial Audio speakers and to be honest they did not impress. (Did not hear Zu speakers). BUT did listen to the Tri-Art Audio open baffle speakers which to my ears were one of best of show. 

my take at axpona 2019 was that the spatial x3s and the big tri-art's were among the best sounding speakers at the show.   esp given their price points.