Obligatory photo here: Impressions here: https://www.superbestaudiofriends.o...ars-reviews-impressions-and-discussion.10501/ Given the FR graphs floating around, I had initially thought I would run away in horror upon first listen, but this was not the case. The tonal signature is one that I would typically mock as stereotypical Asian IEM tuning with stronger than typical low-mid bass emphasis and a pushed up upper mids. However, I found the bass emphasis not overdone and a nice balance to the emphasized upper mids. What really drew me in was the timbre and articulation, particularly the decay of the drivers. The timbre and transient response was at least intriguing, something different, if not simply darn good. I had no idea what was in them as I intentionally avoid reading any marketing literature on IEMs because it's mostly dick wanking bullshit. What counts in the end is how they sound. (I could care less about 22 drivers, urethral openings, or exotic materials because 95% of the time, these speshal implementations sound like overpriced shit.) I thought the ZEN may have been a hybrid at first, but knew that wasn't quite it. Turns out it's a single driver magnesium alloy DD? Seriously, that's how lazy I am with respect to Googling. But of course! I thought I had recognized it - this from my speaker building adventures using the Seas magnesium drivers. The timbre is closer to these as opposed to the magnesium drivers of the Elear / Elex. In a nutshell, I'd say that the DUNU ZEN are like advanced JVC FDX1 with clearer lows and crisper highs. I have the FDX1 packed away so I cannot comment on things like bass texture, plankton, etc. I use the FDX1 with the blue filter or whatever filter is the least upper-mid forward one. The ZEN's tonal response, while stomachable for me, did leave my ears more fatigued than the FDX1. I don't want to crap on the DUNU ZEN's frequency response too much though. I get it, they need to make IEMs sound in a way that they think their audience, their customers will like. I just don't think that audience is SBAF. Would I say that it's a shame because there are such other strong qualities with the ZEN? Nope. Not at all. Most portable players have EQ. I also use Roon which has EQ. The thing about frequency response errors or screwiness is that they are correctable. This is why these errors are called linear distortion. Linear distortion can be corrected. Non-linear distortion cannot. Hence why my measurements will begin with non-linear distortion and how the ZEN performs well, or at least well in an interesting way very different from BA type drivers. When I find my FDX1 (the Pod has been delayed because of the weather related mini-disasters in Texas), I will do a non-linear distortion analysis of it for a DD to DD comparison. As an aside, I can hope that DUNU will make an IEM more tailored for SBAF tastes. The price is certainly right. I'd be creaming all over these if the FR were more like the Andro, Solaris, Ara. Really, I wish DUNU will make an IEM for people who did NOT grow up blasting IEMs at loud volumes so they have hearing damage between 3-6kHz. Usual disclaimer: as an American, I don't know shit about IEMs because there aren't any stores that carry 1037 IEMs that one can demo in North America. Not that it matters because 1031 of the 1037 are probably shit and out of the 6 ones that aren't, 3 cost like $4999. Personally, I'd rather spend that kind of money on a TOTL mattress and a nice bed.