@rau
Sorry, I've been out of pocket.
Regarding the two products, I went in there to Scott Walker with the intent to find my next speaker.
I'm coming from Magico Mini 2 and I also had Bowers 802D3/800D3, Sonus Faber Stradivari, and Rockport Avior I.
I also compared the units to the BW803D4.
Different price points I know.
The A5 is surprisingly smaller than I thought it would be in real life, especially when it seems like a baffle full of drivers. The M2 actually looked a little bigger than I expected. Both, in the end, are similar in size.
Regarding the appearance, the A5 is flat and rectangular. The feet at standard issue outrigger and spikes. I do not recall if the pair I heard was A Pods. The baffle of the A5 is utilitarian, you can see the attachment points and the screws. This means that the entire driver array is attached to the baffle, including the more sensitive tweeter assembly.
The M2, by comparison, is far more advanced. The baffle is curved, no screws to be seen. The patient has a lute shape, the entirety is made of 3/4" carbon fiber if I recall correctly. There is an aluminum spine, which holds 3 tension rods that affix to the baffle. The drivers are attached to a sub-baffle.... while the tweeter is attached to the backside of the front baffle, allowing it to remain isolated from the more mobile/excursing midrange and bass drivers.
What I heard?
I heard the M2, then A5, then M2.
Once I heard the M2, I had an idea of how it sounded. There was a warmth to the sound, the bass was more than sufficient. THe units had good PRaT and good musicality. The imaging and the treble was rounded off, and felt natural.
Then we moved the A5 in its place. The A5 sounded significantly brighter to me, edgier, and less musical. The clarity and midrange transparency was likely similar, but the sound seemed flatter. The bass was better, more impact. But not enough for me to feel like the M2 was bass anemic.
Went back to the M2.... I knew again that this was the more natural sounding unit. So we stayed with the unit the rest of the audition (approx 5 hours), and I purchased a set.