Frequency Response and Initial Subjective Impressions: THIS POST Universe Pads / Solid Mesh CSDs: https://www.superbestaudiofriends.o...um-review-and-measurements.12125/#post-378100 Universe Pads / Solid Mesh Impedance: https://www.superbestaudiofriends.o...um-review-and-measurements.12125/#post-378123 Universe Pads / Vented Titan Mesh Thoughts and Subjective Impressions: https://www.superbestaudiofriends.o...um-review-and-measurements.12125/#post-378126 Let the measurements and analysis begin: https://www.superbestaudiofriends.o...iew-and-measurements.12125/page-3#post-378262 This will be another one of my of stream of consciousness reviews along with @ChaChaRealSmooth, with whom I am sharing impressions. I've been out of town for a little more than week (back in Burbank), so I haven't had time to listen intently or even take detailed notes. My initial impression is that the Atrium is Verite level headphone, but with the biodyna diaphragm material, along with the associated "biodyna" timbre, which I absolutely level. This sound is shared with the Sony R10, Fostex woodies, the discontinued Klipsch HP-3, among a few others. I'll let Zach more properly introduce the Atrium himself as I'm pretty bad about highlighting product features and stuff: As with other ZMF headphones, a number of pads will work with the Atrium. The only pads I've tried so far are the Universe, which I believe is the stock pad, and the Be pad. I have the Auteur pads too, but I haven't tried those yet. The Atrium also comes with some sort of mesh in front of the driver. I believe @zach915m has developed other mesh designs. Basically, there are some pre-set options to play with, as well as system synergies, thus a stream of consciousness approach would be best (basically when I have time to get to it or if somebody asks me to look into something specific). In general, I would say that the Atrium is bassy and dark sounding headphone. There's a slight mid-bass boost (the bass is hefty and punchy). The lower and mid treble are muted, although there's some decent air, at least with the Universe pads. Unlike the Verite, there doesn't seem to be as much of a upper-mid depression, if there is any at all. Plankton seems to be on a similar level. Overall speed of transients isn't quite as fast, although the attacks are more biodyna crisp. Again, these are early and initial impressions (before any measurements were taken). FWIW, I have the Verite Closed headphone as part of my regular rotation of three or four - this going on for years now. For now, I will provide an FR measurement. ZMF Atrium Universe Pads Frequency Response (FPC) ZMF Atrium Universe Pads Frequency Response (EARS) Finally, for those who are not familiar with ZMF, a lot of it is about the wood cups. While the Atrium doesn't have has much wood play as the Verite Closed (Sapele), there's always some sort of woodie sound to them.