I don't know if anyone else was in on the Dekoni earpads from Massdrop. I saw that they had a sheepskin option so I went ahead and jumped on it. They arrived yesterday and while I absolutely adore the ZMF omni pads I've been using, I just had to satisfy my curiosity.
They came in a nice box with a magnetic clips that close for storage.
As far as how they affect the sound, I have to say I'm a bit surprised. There's something about the stock pads that kind of disappointed me, maybe it has something to do with the white plastic rings that were inside, but I don't remember what they were supposed to do. This set is just straight up memory foam and sheepskin, and they're very similar in sound to the ZMF Omni pads, albeit with a smaller, more intimate soundstage. As usual, since the driver sits closer to the ear, you can expect a tad less bass rumble (but more punch) and stronger treble.
Well done Dekoni, and this is coming from someone who was highly skeptical, if for no more reason than being wary of any company that deliberately spells "S" as "Z" (in their site name, www.earpadz.com, and, I'm also looking at you, Brainwavz).
Edit: After continued listening, I now remember what the plastic rings inside the stock earpads were for: attenuation of some of the treble frequencies. I'm starting to notice some sibilance in vocals and cymbals using the Dekoni pads. Not too much, but it's probably enough to cause some fatigue for some after long listening sessions. Maybe the effect is a bit subdued because I'm using a Vali 2 tube amp.