Sure, I can compare my Atticus using lambskin ori pads. While I have both the 2k copper and verite silver cables from zmf, for consistency I will use the verite silver cable as when I compared Atticus to the hifiman he-r10d.
Before I start I need to let you all know my bias is toward zmf as that is my favorite headphone brand. I own all of their dynamic headphones in African Blackwood and own a second verite, verite closed and Atticus in a wood other than blackwood. My favorite headphone throughout my entire audiophile journey has always been and continues to be the zmf aeolus. With that said I do not consider myself irrationaly affectionate about my favorite brand. What I mean is that while I always favor the zmf sound I feel I will not lie if a different headphone does something better than my favorite headphones (I still recommend pulling out your salt in case of anything).
So to start things off both headphones are excellent examples of how different woods benefit their respective sound signatures. The African blackwood is a unique wood used on musical instruments and since Zach of zmf is influenced by guitars, think of the use of wood on a zmf to be of a similar nature to using blackwood on a guitar. This specific wood doesn't suffer from the same downsides of other tone woods. In a nuanced way this wood helps the warm bassy sound of the Atticus overcome a sense of muddiness. The backgrounds are very black like a planar.
As for the es-r10 the zelkova wood is used for taiko drums in Japan. The lighter hardness helps its airy brighter sound signature. Taiko drums are inspired by the sound of thunder which probably explains why the bass initially hits hard in a way that it may cause you to have an almost deer in the headlight look. But just like thunder the effect disappears fast, so as mentioned before weaker subbass. Part of me feels the wood is helping this headphone sound bright without the common assumed downfalls of being bright. Like when people hear the word bright they think hd800 or ultrasone edition 10 bright in that it means it will hurt your ears. As mentioned in my previous posts about how good the treble is, the es-r10 is bright done right at least ot my ears.
So while the Atticus sounds pretty clean because of its black background, the es-r10 sounds clean like in a way that reminds me of my stax headphones. Different takes on clean backgrounds.
The Atticus is very much warmer, thicker, and darker than the es-r10. Midrange is magical on both and whatever each is lacking they perform in a tastful manner as not to offend the listener in what they might lack. The es-r10's weaker subbass to me is forgivable because of the excitement caused by the initial snappy on occasion thunderous impact. The Atticus's darker treble is forgivable because the black background helps prevent the bassy warmer sound from every truly covering the mids and treble.
The obvious advantage of the es-r10 is that its stage is wider by a noticable bit but deeper by an even greater degree. The Atticus sound stage is intended to capture the feeling of being on the stage with the band, so an intimate presentation vs being in a room effect of the es-r10.
Difference in detail is a little tricky to me in this case as sometimes its easy to be fooled in cases of brighter headphones. Sometimes we are misled by brighter sounds making us think the music is more detailed, but I think the es-r10 does play music with a higher resolution and is noticeably more detailed. So when I hear for example a string plucked on a guitar with the es-r10, the sound conveys more vibrations resonating off the guitar vs the Atticus. Distant sounds had a bit more texture to them. The es-r10 in detail retrieval does remind me of the raw detail extraction found in an hd800 but without the hd800 treble peaks.
I think due to the nature of the es-r10 it would be wise of me to simply jump to the verite closed and stellia so as to confirm possible limitations of the es-r10's technical capabilities but to also use the verite closed and stellia as a reference for further dissecting the uniqueness of the es-r10's soundstage.
The es-r10 does sound like it plays on a higher level than the Atticus and since they are both on opposite ends of the sound signature scale, the es-r10 is showing signs of becoming a wonderful compliment to my zmf collection. The es-r10 has a completely different sound signature and presentation, but like my zmf's, the es-r10 sounds like a headphone to enjoy your music without sounding more analytical despite the es-r10 having a more reference like sound.
Another warning is that since I have been the only voice for impressions at this time, the es-r10 that
@Ciggavelli bought can't come soon enough. I'm sure that he will have a pretty different set of tastes than me and should be fully vocal if his reactions may turn out to be very different than me to help the direction of this thread. I like to think that having more voices helps audiophiles figure out patterns in what is being described so that more concrete understandings of a headphone can form.