I can volunteer some info on the big series Zingalis, confusingly named "client EVO" followed by a number. Mine were the smaller number...
I was actually considering these for my room before Covid 19 brought me to my senses, so I listened to them extensively, not at home but at a dealer's, first in a ¬40sq m room, then in a smaller, 15sq m room.
They were driven in the beginning by AR monos (big, no idea which model, respectfully nothing to write back home about) and then by a totally unknown to me "Music(al?) Frontiers Audio" SS amp with a tube input stage. This amp is simply superb, reminds me of a slightly warmer Dartzeel...
Front end was mine as was the music library; we listened Classical music of course, jazz / blues / rock (Led Zeppelin, PF...)
Sorry for the long intro, but I might as well provide the setup so you get a better idea.
1) These are seriously beautiful constructions, not only the build quality but also the looks -- weird but very attractive with flowing lines (reminded me of Kharmas of yore). They are about 1m tall, and quite chunky and heavy.
2) Room size: they were borderline in the small room: i.e. difficult to fit a Mahlerian orchestra and play above a whisper
3) Sound: in a nutshell, when driven by that "MFA", the sound was magical down to the low mids. It sounded like I was listening to one, full-range, drive unit taking me all the way from 20kHz (or wherever it is) down to about 100 -- seemlessly. I'm not sure what they do & how they do it, but the Xover from the horn / waveguide to the next unit was inaudible.
That said and by comparison, the bass was nothing exceptional, it was present and not lacking in volume but it did not have the crispy, natural detail of the rest of the spectrum.
Listening to live recordings (ACDC anyone???, S&G concert in central park, Eagles live, DP made in Japan, Mahler-2 Tennstedt-LSO, live recording ) was strikingly good, immersive, moving at times.
You would probably love these for being different and playing well BUT I've left the big snag for last: said MFA amp is 150W per side and, although these are allegedly very sensitive speakers, they really sang with that amp.
Sorry for the lengthy monologue