Electrostatic Tribrid In-Ear Monitor with 1 Dynamic Driver + 6 Balanced Armature Drivers + 2 Electrostatic Drivers

    Authentic American Knowles and Danish Sonion Drivers
    4-Way Passive Crossover Circuitry
    4 Sound Bores
    Natural Tonality and Powerful Subbass.
    Litz 5N OCC 100 wire x 4 core Silver Plated Cable
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The Journey of THIEAUDIO High-end IEMs

The goal of Thieaudio was to serve as a creative platform for gathering the best teams of engineers to inspire revolutionary audio products for audiophiles and professionals alike. For each project, we hand select the most innovative and renown engineers in his or her field to oversee the design, engineering, and manufacturing of the products. We are proud to present two top-of-the-line signature series In-Ear Monitors - the Monarch and the Clairvoyance

Signature Series: Monarch & Clairvoyance.

Gathering the momentum from the success of the Thieaudio Phantom planar magnetic headphones, and the Voyager and Legacy series In-Ear Monitors (IEM’s), the two new monitors utilize the latest driver technology from the Danish manufacturer, Sonion - the Electrostatic (EST) tweeter. The EST driver features an ultralight membrane in a small tweeter chamber that is powered by an independent transformer to extend the in-ear monitor’s treble range up to 80kHz

Monarch - King of the IEM’s

From the tuning to the technical capabilities, the Monarch was designed to bring out the best that In-Ear Monitors can offer. The sound signature had to be analytical to bring about precision and a reference-style tuning. This necessitated a linear midrange section which would place all instruments balanced with one another and provide an overall clean and lean sound The mid-treble transition peaks at the inner ear canal resonance point and is sustained through the entire upper frequency range to maximize detail retrieval and overtone presence. Yet, careful attention was placed in making the trebles smooth and void of sharp peaks or dips to eliminate any uncomfortable upper harmonic irregularities. We find the Monarch to be among the few IEM’s on the market to truly and cohesively integrate the balanced armature and EST drivers in a manner that shines forth the best of their potentials The Monarch stands as Thieaudio’s best display of technological and sonic innovation and is ready to redefine the musical standard for In-Ear Monitors. On the other end of the spectrum, a 10mm dynamic driver and multi-balanced armature woofers have been implemented to bring about a punchy subbass impact. The lowpass point was selected below 150Hz to create an even cleaner midrange section, while still allowing a powerful subbass to lay down the foundation y


Thieaudio was launched in 2019 as a creative endeavor of Linsoul Audio. We are committed to the continual expansion on the limits of high-fidelity audio. We welcome you to join us and experience excellence in musical performance! In reality, the utilization of this driver configurations effectively enhances the extreme-treble response and thereby provides a protracted treble decay, a more airy atmosphere, and enhanced sound resolution. The correct implementation of EST drivers can make normal balanced armature driver earphones seem dull and lackluster in comparison. Pairing the EST driver with a newly developed biopolymer dynamic driver and traditional balanced armatures, we have styled two unique IEM’s. The Monarch focuses on a precise treble response with extreme detail retrieval and high level of clarity. It is an exceptional candidate for a CIEM (Custom In-Ear Monitor) fit due to its characteristic sound signature. The Clairvoyance emphasizes a natural tonality with a powerful subbass and a smoother treble section. A re-envisioning of the popular Harman curve, the Clairvoyance emphasizes a clean sound with an impactful subbass and extended high frequencies. Both models are ideal for any circumstance in which uncompromising tonality and technicality are needed, and we could not be prouder to present the pinnacle of Thieaudio’s engineerin

Total Number of Drivers
Electrostatic Tribrid In-Ear Monitor with 1 Dynamic Driver + 6 Balanced Armature Drivers + 2 Electrostatic Drivers
0.78mm 2PIN
112db at 1KHZ

Coming soon...


Coming soon...

Customer Reviews

Based on 49 reviews
Laurent B.
Best iem i have

They sound great!!! lots of details in treble and fast / textured bass. Mids are smooth. I changed the eartips for xelastec (more treble) or jvc spiral dots (more smooth mids), depending of the kind of sound i want. I also associated the Monarch with the Dunu blanche cable (300€).

James Blint
Almost perfect

Right away, this is the most detailed sound i ever heard in an IEM. It's truely impressive what the monarch can extract from your tracks. Highs are perfection, high mids and mids are very detailed again but i would say at the expense of some slight harshness around 5K (to me) but also depends of the pairing (output impedance, freq response, etc.. of your gear) and likely tips too.

My only grip with the Monarch is actually the low end, i don't care it's somewhat elevated, but i think it's too elevated in subbass and not as super tight as i would have liked, to make it perfect. It's still a very impressive set on most tracks but for that reason i only give it 4 stars.

Overall it's still probably one the best IEM you can get for the money and it's in my opinion unrivaled in details and clarity.

Iem Royalty

Monarch is one of the best iems money can buy. It is technically accomplished and very detailed while remaining musical.

Sub Bass on Monarch is unparalleled, it goes deep, rumbles and shines when it need to without bleeding in the mids. It's very artfully tuned.

Mids are clear and transparent. There is no extra added warmth or emphasis on lower mids. This makes for a very transparent and neutral signature in mids. Some people might find male vocals a bit thin, but this can be remedied with a warm source.

Treble on Monarch is the best I have heard in any iem. The EST drivers deliver a very detailed yet smooth upper range. You hear everything and it is wondeful. Resolution is a 10/10.

Monarch is a very technical iem with great separation, detail and layering.

The only improvement I can think of would be a bit more mid bass energy, to give more life to kick drums. This can be of course adjusted with some EQ.

Other than that, this king reigns supreme in iem land.

DJ Core
Just WOW!!!

For the first time, an IEM met and exceeded my expectations and excitement . Came back from Djing in Club LIV (SouthBeach, Miami) over the long weekend and this was waiting to be opened. This IEM is just fantastic. Does everything well paired with the right DAP. Sony ZX507 is my daily driver and this is the perfect pairing vs my N3Pro and Sony A55. TOTL tuning for 1/6th of the price. Buy it asap.

Viben Weirdo
Recommend Monarchs - They are my jam

The dynamic driver hits the bass better than BAs. I just does. I have Moondrop S8 and yeah all the sounds/music is "smoother" and easy to listen to to. I however have never had these IEMs sound harsh or make me want to take a break. They hit sharply where the S8s don't and it is pleasurable in that it doesn't hold back. The S8s have a place definitely but technically and transparency of these Monarch IEMs is the best I have heard and I appreciate them so much. They are TOTL for me, your milage may vary. S8s are definitely TOTL for some folks too - bass is too important to me for them to be that for me. I recommend the 100 ohm inline filter for these like crinacle recommends - it actually is audibly made a difference to me surprisingly.

The 2 pin issue - isn't new, other options are available and I am hopeful for the new solutions. I am content with the 2 pin thing slipping out. If that is my only issue, it is a non-issue. The other issue was kind of an issue which I am requesting it be fixed. The metal part where the ear tips and wax filters connect actually came off of one. The customer service has been great - just waiting to get these back repaired. Photo of issue attached just for reference.

Oddly enough while both these things seem like they are red flags - I 100% recommend these IEMs. That are like going from going from out of the box iems to blon 3s as far as a surprise factor. They are orders of magnitude beyond that - Amazing, just amazing. I am not even caffeinated this morning so this is pretty low key excitement about something I genuinely feel comfortable recommending to other folks.

The 100 Ohm resisters that were mentioned are worth it. If nothing else they immediately remove a noise floor from any amp - which in itself is significant. The bass boost was noticeable for me, but YMMV. I prefer balanced 2.5 mm, honestly you won't notice a difference in 3.5 aux resisters and are still worth it. The only place I found these sold in an professionally made sort of way is penon audio. I get no kick back for endorsing these - they are solid though. About 15-16 USD.

My Benchmade EDC pocketknife in the photo - can also recommend. I is 551-S30V Griptilian just as a reference.

Hope this helps. Take care of yourselves and take care of others if you can.

Ju won Lee
Except the sound, Monarch has serious problem.

Thieaudio Monarch

Like other reviews says Monarch has excellent sound.
But Monarch has a big problem.
The durability of the 2pin connector is very weak and cracks occur.
If the cracks develop more and more, it can cause major problems with the unit.
This problem is a major flaw in the product, and I cannot recommend this product to anyone unless an improved version is officially released.

Jorg van Vliet


HYUN Jinwook
Thank you.

Thank you for introducing me to many good products.


入烧一年,目前买过过最好听的塞子,没有之一。现在用的iPhone➕官方小白直推,就已经锤爆其他所有塞子在rme adi2 dac上的表现了(大法m9,fd5,qoa Adonis,tin t5,ie40p)。

The best!

I have a lot of IEM‘s ….for me, this is the best sounding IEM i ever had!
….but it needs power to drive!

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Last updated: 1 November 2022

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