Sennheiser - IE 900

You should definitely check out the Sennheiser IE line. From their cheapest IE200 , their midrange IE600 and to the most expansive IE900 they are all amazing iems, with incredibly small shells. Small enough to actually sleep with, as they do not stick outside of the ear.

Try ie900 for the clean powerful bass.

Exactly, I owned z1r before. Ie900 has slightly more sub bass but z1r has overall slightly better bass quality.

Thieaudio Hype 4, sounds better than my Sennheiser HD 800S and Sennheiser IE900

IE600 or IE900 are some of the comfiest IEMs I’ve ever tried. Single DD but they sound incredible.

The pros use ie600 or ie900 at the major tournaments, so you know it's legit for gaming.

I am so happy with my setup after 2 years. Topping DX7pro DAC, Neve RNHP Headphone Amplifier and Shure SE846 GEN 2 with the Sensaphonics custom sleeves, playing hi-resolution files from Qobuz. I didn't know that I could hear so well, but after working on Pro Audio gear for 25 years I finally have gotten the affordable solution for my listening experience. I started with Sony CD3000 headphones in 1995 with a CDX200ES and it sounded very good indeed. I bought the Sony SA5000 and I was disappointed with them. I bought a pair of Sennheiser HD800S's and they were better than both of the Sony ones, so I sold them. I then got a pair of Sennheiser IE900 and they blew away the over the ear phones (all of them) and I sold them, only to have the IE900 fail on the left side and not being able to get spare parts for them. I then bought the Shure SE846 GEN 2 from Sweetwater and I am so happy with them. It was like going from consumer/prosumer to Professional level! I spent a few thousand dollars, but I could have spent more time and money and been less satisfied with the outcome. 

Absolutly agree, personally they are better than ie600 or ie900.

The $400 range is where it really maxes out. It doesn’t get better at $500 or more. I swear I’ve seen this exact discussion before. I basically have $400 sets that perform better, or about the same, as $500, $600, even $1,000 sets. That’s where the improvements stop. Dusk is $400 and Tea Pros are around $340. Softears Studio4 is currently around $350. We’ll use that as a reference. Dunu SA6 Mark 2 is $600. One of the most overrated and overpriced IEMs I own. Sounds like flat coke. I’d take Studio4, Tea Pro, or Dusk over it — all around $350–$400. Xenn Top Pro, even at $500+, isn’t “better.” It’s just different. I have cheaper sets I like more, like Kiwi Ears Astral, Cadenza4, Studio4. I extensively tested the oh-so-hyped Mystic 8. My Studio4 still beats it (for me). Mystic 8 is $1,000. Studio4 is $300–$400. I like the IE600 and IE900, but they weren’t better than what I own now. And those things are stupid expensive. Mega5EST a few months ago was $500+. It was eh. Murky. I like Dusk and Tea Pros better. Again: things don’t really get better past $500. I also have zero interest in the Mega7. Would not be shocked if Kiwi Ears Astral or Xenn Top Pro kicks its ass. And while unrelated, this is exactly why I don’t bother with 99% of Thieaudio. They make it SO easy for me. Stupid expensive, stupid huge. If your idea of “premium” is building IEMs the size of BOULDERS that don’t even fit smaller ears, then thanks — you just removed yourself from consideration. I demo them, I try them, and I literally can’t wear them for long. So you never get my money, and you never will. You’re basically the GORUCK of IEMs: stupid expensive, stupid big. Easiest pass in the entire hobby.

Dusk, to my ears sounds just like Tea Pros. They're practically interchangeable. Tea Pros are a leash-less Dusk (Dusk sound without DSP cable) Astrals aren't comparable to Dusk/Tea Pros. It's more closer to Xenn Top Pro or even Cadenza 4. It has more of a bright slant. Whereas, to me, Dusk and Tea Pros are more warm-ish. I really love the sound of Astrals for things like kpop and female vocals though. IE900 I tested out in Canjam but the bass was too much for me rofl. I much preferred the IE600.

i'm wearing these right now! My favorite thing about them is that they use normal mmcx instead of sennheiser's version of it so they're interchangeable with my different true wireless and cable setups

Hi! I have a Glacier and I tried an IE 900 at Can Jam. The IE 900 is massively underwhelming at best, and IMO isn’t even in the same league as the Glacier. There is absolutely no technical aspect that the Glacier doesn’t absolutely trounce the the IE 900 at (Soundstage, instrument separation, resolution, imaging) And Glacier gets the tuning advantage for me with a sound frequency response measurement that tells you little about how it sounds. You have to hear it to understand, but it’s more neutral than the graph with a deftly layered subbass that envelops you. Still fun and engaging, but not as big a u shape as the graph would suggest. That’s the best I can describe it here. Sennheiser is a little behind in the IEM game.