From what I can see online, this pad is only available in solid (non-perforated) so is it a solid pad your now using? Could you elaborate a little on its sound signature? What is it that you like so much its now your favourite, especially in comparison to other pads (regardless of the material, do you normally like solid pads on the Atrium and if yes how does it compare to other solid pads you’ve tried?
Sorry for such detailed questions, it's as you said, a non-mentioned choice of ear-pad so no other info on its sound before you brought it up.
I think I will reserve most of the SQ aspects of what I personally hear to myself, as I think its apparent from the majority of peoples opinions on pads I hear things substantially different in most cases (and even different to what ZMF pad chart shows), and I would rather not be the reason someone spend money on something they ultimately do not like.
I know ZMFs website says solid pads "are only used for their closed backs".. honestly, I have no idea why this is stated like solid pads have
absolutely no business being used on open backs - not trying to knock, just seems like a pretty shortsighted opinion to state as a fact, specially when dealing with something as subjective as SQ - I am glad I tried solid pads, that is for sure - my favorite pads to date have all been solid on the Atrium - also, the perforated pads I do have, the stock leather and Verite BE2 suede, I actually covered up the majority of the holes on the outside rim with leather, which imo made them sound a lot better for me. So its obvious for me personally (completely subjective) I like solid pads on the Atrium a whole lot more than perforated pads.
For me, the Oval shape is more comfortable, and from what I have tried these pads are the most comfortable I have tried on the Atrium, and they are much thicker which keeps the sound open and spacious. The sound is surprisingly very balanced, while bringing out the low end much more than the stock leather and BE2 pads - not as much as the Brainwavz XL suede, however, they are much more balanced than those, without the increased lows bleeding into the mids and highs much at all, as those do - the BW XL Suede required some eq adjustments, these barely need any at all - and actually, needed the opposite to the BW XL Suede - where those needed the mids/highs elevated, whereas these need Freq 1731, 2500 and 5500 slightly lowered by 0.5.
Here is a post detailing the different pads I have tried -->
https://www.head-fi.org/threads/zmf-atrium-new-open-back-co-flagship.962609/post-17182382
And -->
https://www.head-fi.org/threads/zmf-atrium-new-open-back-co-flagship.962609/post-17186572
And -->
https://www.head-fi.org/threads/zmf-atrium-new-open-back-co-flagship.962609/post-17189955
I do wish there was some form of "pad sharing", so one could try out pads before buying them, as they aren't cheap, specially the ZMF pads, those are pretty expensive.
The absolute main difference I have noticed with solid pads, is they bring out the low end a lot more than perforated - some a bit too much, like the BW XL Suede, however, the ZMF Oval Suede do it in the exact way I was trying to achieve with the BE2 perf suede by covering the holes on the outside - doing that, almost got them there, but these do it perfectly - my pad rolling itch completely gone now, and I am super happy about that!
Basically this -->
However, they also tame the upper end, and if you are sensitive to that frequency range, you might find solid pads much more suited to your personal tastes.