I must say I only now (after an intense 5 IEMs bought and 2 returned couple of months
) understood what the Harman critique for IEMs means.
I am an audio professional and have been dealing with sound in rooms for years, always had a few headphones with me for when I'm away from them, and a year or so ago stumbled on AutoEq and the idea of "tuning" headphones for producing. The Sundara has accompanied me since 2019, and just completely opened up in a great way, and after a few more deliveries and the idiosyncrasies thereof I realized that I needed more definition in the higher mids and highs to "control" my control room (after working longer than I should on projects) and I landed on an LCD-2c that felt "right" after 3 mere EQ points and roughly 20mins.
Not happy with that, since I was messing with my monitoring anyway I just started diving into Chi-fi, and have had a few impressions as well. The idea that I could get a lot of sound on the go for much less than over-ears and studio monitors was too good to pass on. And it seems very true, it just blows my mind how far 80€ can get you. This is the brief journey (always cross-checking all my references with the full range tuned room setup and the Audeze):
1) 7Hz Zero 2 is just a great "fun" balance, that to me is almost a benchmark in enhanced bass "neutrality", I realized I can make decisions with it after accepting that amount of bass, but that's the ceiling of low-end that is still "usable" for full-range inteligibility. The weird thing to me is that even with a lot of bass, the mids are there. The only downside is a lack of definition per se, it cannot keep up with the Audeze (40 times the price) or my room setup (about 160 times the price for the speakers alone
). But it is super valid as a tool for mix/master check to see how everything sounds in IEMs. Not parting with that.
2) Truthear Zero Reds: this was to me a trainwreck. Overwhelming bass, everything buried underneath it. I could get no info or insight on anything the moment any low-end came into play. Kept it for 2 weeks. Happy to get rid of.
3) Wan'er Studio: a little thin, but super in your face without splashy or zingy highs, and lean bass, but with subs! I got it for 15€, and realized I can use that for tracking or playing or for when musicians come to record, the mids feel "correct", and the overall sound reminds me somewhat of the scooped NS10 sound and its paper cones in a less fatiguing way, 100% usable, not parting with that.
4) Simgot EW300: impressive for a first listen, incredible low-end, but I realized the 7Hz Zero was much more insightful. The Simgots kept up with the lows of the Audeze, had similar low-end presence with obviously worse transient response, but I would be able to understand how they relate, except that EVERYTHING else was "off". The mids were just gone, with the presence area still existent (so that was better than the Reds), but that was it. And the highs were just ridiculous, high percussion just turned into paper zings, with high-highs boosted into tinnitus inducing chaos. Off they went. If that is their "tame version of a house sound", I don't want to know what their not-tame version is because that just feels like what a wavy mess on a graph sounds like. "Cut here, boost that, cut here, boost that, cut cut boost boost boost", and you're left with a super unnatural mess.
5) Truthear Hexa: I decided to overcome my trauma from the Reds, and ordered them when returning the EW300s. As soon as I started listening to them with their foam-tips, I remembered the first time I had HD600s on my head. Same lean lows, with more subs, and very clear mids, present highs. Very impressive, for a 10th of what the Audeze cost me. I just felt mid-bass was lacking, but that roller-coaster on the spectrum from the Simgots was nowhere to be heard here, lows aren't as candy-like, but everything else provides me enough insight and information to complement my setup for sure. I raised around 80Hz just 0.5db and it already felt "right" in an impressive way. Then I opened auto-eq and saw the target, some absurdity aside, 1db up at Hz76 and then bringing 200Hz down by 0.5db and up again at 5.8Hz by 0.5db, and it fits like a glove with the speakers and Audeze. I don't think I am parting with that.
Just thought I'd share, because what the "spot on" Harman chasing feeling brings to over-ears, is quite not the mark with IEMs, and around a month ago I thought this was just the "in" crowd trying to make weighty statements. But the Hexa with those 2 points, the Zero 2 and the Wan'er beg to differ, they all feel "closer" to neutral than every other IEM I tried (I am omitting wireless stuff, that I own and owned and others).