ThieAudio

Monarch MKIII

ThieAudio Monarch MKIII

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Overall

#408 in

IEMs

according to Reddit Icon Reddit

Sentiment score43% positive
12
6
10

Top Pros

No summary available.

Top Cons

Last updated: Oct 8, 2026

Reddit Reviews

Reddit Icon2wcp
5 months ago

the iem that fulfills all your need above doesn't exist 😂 I'd recommend two sets: mangird top pro / tea pro se monarch mk3/4 top pro is not as versatile as monarchs but it's more comfortable. monarchs are good at EDM but not great. long term comfort is also an issue because it's shell is bulky. go for monarchs if you're willing to eq because for me, it's treble extension is amazing.

Reddit Icon33RhyvehR
10 months ago

Scammy companies making dozens of models to confuse people so they buy lots?  What else goes on. The simplest solution is 7HZ Zero 2. Then call it a day. Don't get scammed I am saying this from experience, I got up to monarch mk3

10 months ago

I mean if you go by strictly measurements, Airpods Pro 2 (on rtings) and Monarchs "best of the absolute best it doesnt get better then this" 1000$ monarch mk3 (on rtings) are neck and neck, if not the Airpods Pro 2 measuring more accurately. I have zero reason to believe more expensive iems are better, and my ears dont really convince me either

Reddit IconBasick_
10 months ago

U12t is more laidback compared to the monarchs, which sounds more exciting because of the way the treble and mids are tuned. U12t vocals are neutral and don't sound as intimate compared to the monarchs, which I do find a touch more intimate. Both have really good bass but bass nuance and quality is better on the U12t, the bass on the monarchs sound more natural. Both are detailed iems but...U12t is effortlessly resolving and more "holographic" in staging (like the music is wrapping around my head). However, I think if someone is trying to choose between the two, I would recommend the Monarch Mk3. Mainly because the U12T is something you can appreciate more after trying everything else. They don't 'WOW' you immediately, and you know what you're looking for, especially in terms of personal preference on sound and tuning.

Reddit IconBenOG_
9 months ago

That's how different ears can be - for me it's the other way around, I really like the MMk3, but I didn't like both of the tuning options of the MMk4 as much.

Reddit IconDangerRabbit
7 months ago

I tried the Thieaudio Monarch III and it was one of the best sounding audio devices, of any type, I've ever heard. I've listened to the HE-1, and I feel like the Monarchs left me just as impressed - but in different ways.

Reddit IconDisturbed2468
11 months ago

Bruh I've tried foam tips myself on various IEMs. The second I use them no matter how strong or weak the seal is my bass just completely dies off and all I get is peaky treble. Unless my ears just hate foam or something else is wrong. I've tried them on the Arias, the Dusk, the Monarch Mk 3s, and the Oracle Mk 2s.

9 months ago

Yea best would be to some a really great IEM within the price range of 900 to 1200 bucks that's somewhat soft V/U shape and use PEQ cause those shells are CRAZY huge. Like trying to wear a pair of cans in the ears lol. I wore the Mk3s and it took a while to get used to them cause I have medium/large ears but the depth between the outer ear and my canal is deep af.

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