For those who were curious about the cable that comes w/ the A series vs universal series, I can confirm that it's the same cable. The only difference will be between connectors (I have both the gen 1 premium and the current standard cable), but other than that it's the same cable. Also, this is my third custom set and these are by far the best custom molds I've ever had. Very comfortable and the only way I've manage to break the seal is by opening my mouth in a very wide and unnatural manner. I also like the new single large bore. This just makes cleaning iems a lot easier and makes a big difference, vs having to clean 3-4 small bores.
A couple other things I noticed. The sockets on the IEMs are recessed. Also I've noticed a big change from the prior models or least the universals in that the Apex modules are flushed with the faceplate. only drawback I can see with this is that removing the Apex modules will be a little harder, but the module blends in very nicely with the faceplate.
As for the sound, I'm enjoying the M15 modules better, because w/ the crazy seal I got, the bass quantity was almost to the level of the U8s w/ the M20. Now they sound balanced and I'm really digging how they tuned the mids and highs on these. Also the separation, airness and layering on these is a major step from my U8s and V6 stages. I still prefer the U18s for these qualities, but the A12s are really special if you enjoy a warmer, non fatiguing signature with nicely extended treble, but which remains smooth w/ a natural tonality. I've only heard them for a few hours, but so far I'm liking them a lot.
From WM1A player, I like very deep sub bass, nice heavy full bass, warm natural tone, great 3D imaging and layers. I don't need help from M20 modules at all.
