I just got back from listening to the M9 speakers at Magico's headquarters, in their newly rebuilt listening room. I was really interested in hearing the M9 but also in finding out more about their new room's design.
In my opinion the room is a big improvement over their previous already outstanding room. The new design more closely aligns with what we've done in our own dedicated room, with acoustic treatments along all the walls and ceiling, and what are essentially two foot air gaps behind the surface you see in order to capture bass. They even "upgraded" the rug. The result is significantly reduced room interactions all the way down into the low bass region, so that what you are hearing is almost completely the speakers and electronics, instead of the other way around like it is in many rooms.
We listened to several tracks, some of them the same as what I had heard there before but in the previous room and with the Magico S5 MkII or A5 speakers. I remember one of these tracks from before, and on the M9 speakers the upper mid-range and treble sounded more realistic, crisper, and cleaner while also being very, very smooth. (I know, old memory and all that, but still.) The bass was super clean and articulate, and the full spectrum sounded exactly like what you imagine when you describe a speaker as effortless.
I also thought I would have needed to sit farther away than I actually was. But the drivers all blended perfectly well, and I was not hearing bass from below or the mid-range from above. The speakers completely disappeared and the soundstage was outstanding. I'm sure the room helped with some of that.
I also got a chance to see their Klippel NFS measurement rig. This automated device rotates a microphone 360° around the speaker, while also moving up and down, taking a burst measurement at both a near-field distance and then slightly farther away, in order to approximate the anechoic frequency response on-axis, off-axis, and the sound power. It's a very impressive piece of kit, that takes about 24 hours to complete a full measurement. You might have already seen the video they posted showing the
M9 being measured.
Things will look kind of weird if I just dump all the photos into this post, so here's a link to the Imgur gallery:
Magico M9 and Klippel NFS images.