ThieAudio - Monarch MKIII

In-Ears With 2DD + 6BA + 2EST Drivers


Flagship Audiophile IEMs

Sale price₹ 99,990 Regular priceMRP: ₹ 109,999

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1. What is a Pre-Order product?
A Pre-order product is a product that we especially order for you from the brand. Once you place an order with us, we will order it from the brand for you.

2. How do I know when the product will be delivered?
There is a rough timeline on the product availability and once it has been confirmed with the brand, we will inform you.

3. Do you order the product from the brand as soon as I place the order?
We do not immediately order the product but add it in the upcoming order.

4. Will you be giving me updates?
Once we have ordered the product and have a confirmed timeline, we will give you an update.

5. I’d like to make changes to/cancel my order?
You can only cancel/make changes to your order until we place the order with the brand. Since the product is specifically being ordered for you, we will be unable to cancel/make changes once we order the product from the brand.

Free Shipping
7 Day Replacement Guarantee

In case you receive the ThieAudio - Monarch MKIII with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


Warranty & Services

Don't sweat it, this ThieAudio - Monarch MKIII comes with a 1 Year warranty from ThieAudio that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about ThieAudio's warranty in India.

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Why ThieAudio is Special


Designed in China

Young Maverick Brand

New on the scene, but bringing seasoned expertise!

This headphone or gear might come from a fresh, up-and-coming brand, but it boasts the quality and innovation of a well-established name.

If you see a product marked as "🥊 Young Maverick Brand”, it means you're getting cutting-edge technology and top-notch performance from a brand that's already making waves in the industry.

Revered by Audiophiles

Audiophiles can be really picky and tough to impress and if the audiophile community says something sounds good, you can bet it's great!

This headphone or gear has gained recognition and admiration from audiophiles, who are known for their discerning taste in high-fidelity audio. They appreciate its precision, attention to detail and its ability to deliver an immersive sonic experience.

If you see a product marked as "🙌🏻 Revered by Audiophiles", it means that it meets the highest standards of sound quality and performance, making it a top choice for anyone who values exceptional audio experiences.


A masterpiece from the experts who know audio inside and out!

This headphone or gear is crafted by specialists who know their stuff, ensuring every detail is perfect.

If you see a product marked as “🌟 Specialist”, it means you're choosing a device designed by experts who specialize in creating this specific category of device.


Boutique Brand


Born in 2019

Why we love this IEM

I Am Worth It

Only for the most passionate and discerning audiophiles who want the very best.

Audiophiles desire class-defining products that not only meet their needs but truly blows their expectation in quality and performance.

If you see a product marked with “👑 I Am Worth It," rest assured that it's a timeless investment. Its value cannot be measured with ordinary benchmarks and is an indulgence only for a select few.

Serious Audiophiles Only

Diving deeper into exploring the hobby is never enough.

If you're an audiophile on a hunt for a device that meets your high standards, this is one such headphone or gear designed for discerning audiophiles like you in mind.

If you see a product marked with “🦈 Serious Audiophiles Only" we assure you that this device can match your depth of knowledge and expertise to take your passion for audio to the next level.

Incredibly Popular

Some things deserve all the attention.

This headphone or gear is a crowd favourite, winning over fans everywhere with its undeniable audio quality.

If you see products marked as “🥇 Incredibly Popular”, you’re opting for a tried-and-true choice that’s loved by many, ensuring you're getting something that’s proven to be awesome and widely acclaimed.

Audiophile Community Favourite

This headphone or gear has a seal of approval from our audiophile community.

It is hit among the pickiest of audio enthusiasts. It comes with two thumbs up and is the community’s and one of our favourites.

If you see a product marked as “🦋 Audiophile Community Favourite”, you're in for a sonic treat with top-tier sound quality that will make your ears swoon and elevate your listening experience to new heights!

Our Team's Favourite

Cause after all, we are audiophiles first!

This headphone or gear has won the hearts of our team, standing out as a top pick among our gurus.

If you see products marked as “💙 Our Team’s Favourite”, you're choosing a product that’s been tested, loved, and enthusiastically recommended by our team, giving you confidence that it’s a standout choice!


2.5mm & 4.4mm Balanced Plug

Upgradeable Cable

Not happy with your current cable? Swap it out!

If you're searching for an in-ear monitor with a detachable design, these IEMs fit the bill.

If you see an IEM marked with "🔌 Upgradeable Cable," it means it comes with a detachable cable. You can easily swap or upgrade the cable, allowing for customization or maintenance whenever you desire.

Why it Sounds Amazing

Hybrid Drivers

Looking for a combo of rich and detailed sound? Here’s the perfect blend!"

This headphone or gear features hybrid drivers, combining different types of drivers to deliver both rich, full-bodied sound and intricate, detailed audio. It's like having the best of both worlds in one device.

If you see a product marked with "🔈 Hybrid Drivers”, it means you're getting a device that expertly balances multiple driver technologies to provide an exceptional listening experience, blending the depth of dynamic drivers with the precision of balanced armature drivers. Perfect for those who want it all in their music.

Balanced Sound Signature

Perfectly Balanced, Accurately Presented.

This headphone or gear delivers a perfectly balanced audio profile, with highs, mids, and lows in sweet equilibrium.

If you see products marked as “⚖️ Balanced Sound Signature”, you’re set to enjoy a well-rounded listening experience where no single element overpowers the others, making your music sound just as the artist intended.

Ultra-Wide Sound Stage

Do you wish to bring the concert hall to your ears?

This headphone or gear offers an ultra-wide soundstage, giving your music a spacious and immersive feel as if you're right there in the middle of a live performance.

If you see a product marked with "😳 Ultra-Wide Soundstage," it means this product is designed to deliver expansive audio, making your listening experience feel grand and enveloping, perfect for those who love a broad and detailed sound.

Thick Bass / Kickass Bass

There are some headphones that just knock your socks off with high and impactful bass. There’s only one way to describe it - Kickass.

This headphone or gear is engineered to deliver powerful and thumping bass that adds an extra punch to your music, making every beat come alive.

If you see a product marked with "💣 Kickass Bass", it means this device is perfect for bass enthusiasts for an immersive audio experience that will make your music feel more intense and impactful.

Crisp Vocals & Instruments

Vocals and Instruments sound too good, its like a warm hug.

This headphone or gear excels at delivering clear, clean vocals and instruments, making every sound pop.

If you see products marked as “🍿 Crisp Vocals & Instruments”, prepare for an audio experience where every word and note is perfectly articulated, letting you enjoy your music with pristine clarity and detail.

Smooth & Sweet Treble

Seeking something that sounds smooth to your ears and devoid of harshness?

This headphone or gear is designed to deliver high frequencies that are gentle on the ears, offering a listening experience that's both refined and delightful.

If you see a product marked with "🍦 Smooth & Sweet Treble," it indicates that this device offers treble that is smooth and sweet, ensuring your music is free of harshness and full of clarity, perfect for those who love crisp and detailed highs.

Layered and Nuanced Sound

Imagine sitting on the second row of a music hall. Instruments should sound like they are coming from different places on the stage - Layered and nuanced.

This headphone or gear is designed to deliver a rich, detailed audio experience, with every note and subtlety coming through crystal clear.

If you see a product marked with "🍰 Layered and Nuanced Sound," it means this device is crafted to provide an intricate soundscape, perfect for audiophiles who appreciate the depth and complexity in their music.

Needs Amplification

I need more power to thrive.

This headphone or gear shines brightest with a bit of extra power. It’s designed to deliver top-notch performance when paired with an amplifier, giving you that full, rich sound you crave.

If you see a product marked as "🚂 Needs Amplification", it means this device is built to excel with an amp, ensuring you get the most out of your music with enhanced volume and clarity. Perfect for audiophiles who love their sound big and bold.

The ThieAudio Monarch MKIII elevates the music-listening experience to unprecedented levels of immersion and detail. The newly integrated Impulse bass system performs exceptionally well and is finely tuned for exquisite sound quality. With these enhancements, the Monarch MKIII surpasses its predecessor, solidifying its position as the go-to in-ear monitor in its price range.


Raghav Somani is the Founder & CEO of Headphone Zone. An avid audiophile and musician since 2008, his choice of headphones include STAX Electrostats, Audeze LCD 3, and for music on the go, the JH Audio Roxanne + Astell&Kern SP1000 is never too far away. On his playlist, you'll find A.R. Rahman, Michael Jackson, and the Eagles.


The original Monarch and Monarch MKII were groundbreaking in the global IEM industry, setting new standards for performance. They redefined the price-to-performance ratio and influenced how IEMs are engineered and tuned. Now, the Monarch MKIII takes it to the next level with improved technical and tonal performance. Experience unparalleled auditory bliss with the ThieAudio Monarch MKIII In-Ear Monitors. These cutting-edge monitors push the boundaries of sound fidelity, providing an immersive and captivating audio experience like never before. With updated drivers, tuning strategies, and significantly improved ergonomics, the Monarch MKIII offers the legendary performance of the MKII with enhanced technicalities and comfort.



Immerse yourself in a world of pure sonic pleasure with the Monarch MKIII. This latest version features an upgraded driver configuration that takes bass, mids, and trebles to new levels of brilliance. With a combination of 2 dynamic drivers, 6 balanced armature drivers, and 2 electrostatic drivers, you'll experience the richness and clarity of every note, vocals, and instrumentals in stunning detail. The Monarch MKIII is equipped with advanced technology for impeccable sound isolation, ensuring you're fully immersed in your musical journey without any external distractions. Whether you crave heart-pumping beats or serene melodies, these in-ear headphones deliver an unparalleled listening experience.



Introducing IMPACT2 (Impact Squared), the latest technological breakthrough from ThieAudio, revolutionising the personalised audio industry. IMPACT2 is a cutting-edge subwoofer solution featuring (x2) 10mm composite diaphragm drivers arranged in an isobaric design. By adding another 10mm subwoofer, the bass's power and texture are significantly enhanced, while the in-house isobaric chamber design ensures consistent frequency and pressure. As a result, you can enjoy superior bass quality without compromising on tonal integrity. IMPACT2's dual 10mm subwoofers deliver a truly immersive audio experience with enhanced bass that takes your listening pleasure to a whole new level.



The Monarch MKIII has undergone significant updates, now featuring Sonion's latest electrostatic (EST) drivers, and benefiting from ThieAudio's advanced tuning strategy. The EST drivers have been fully optimised, resulting in an expanded upper-frequency extension from +15kHz to 20kHz, providing a more comprehensive and detailed ultra-treble performance. With these improvements, the Monarch MKIII delivers a heightened sense of staging, atmosphere, and overall resolution, elevating your listening experience to new heights. Additionally, the MKIII's mids have been carefully refined to enhance the separation between individual driver ranges, maximising their output while minimising Total Harmonic Distortion (THD).



At the heart of the Monarch MKIII lies ThieAudio's unwavering dedication to achieving exceptional tonal quality. The MKIII maintains its studio-monitor-like tonal signature, ensuring a clean, natural, and highly detailed sound with a focused sub-bass impact. Retaining its tonal legacy, the MKIII incorporates a genuine 4-way crossover with 9 separate passive components, upholding its commitment to tonal excellence. The IMPACT2 technology further enhances the sub-bass, delivering punchier results, while the mids from 200Hz to 800Hz remain neutrally flat. This characteristic tonality in the mids closely mirrors the precise audio reproduction of studio monitors used in professional recording environments.



Thieaudio's Monarch MKIII now comes bundled with an enhanced modular cable featuring thicker 22AWG 6N OCC silver-plated and graphene silver-plated composite wires. This upgrade in cable materials adds a touch of clarity and refinement to the sound, surpassing the previous generation of Thieaudio's modular cables. The cable includes three interchangeable plugs with 3.5mm single, 4.4mm balanced, and 2.5mm terminations, ensuring seamless compatibility with various source devices without the need to change cables.



With meticulous attention to detail, the Monarch MKIII showcases a seamless fusion of aesthetics and functionality. Its ergonomic and lightweight design ensures a comfortable fit, allowing for hours of enjoyable listening, making it a perfect companion for audiophiles and music lovers on the move. Crafted individually by dedicated engineers, each unit is a masterpiece. The housing is expertly made from 3D-printed medical-grade resin, guaranteeing both skin safety and long-lasting durability. Moreover, the faceplate of every Monarch MKIII is uniquely decorated and coated, providing a truly personalised and exceptional experience.

1 Year Warranty

Don't sweat it, this ThieAudio - Monarch MKIII comes with a 1 Year warranty from ThieAudio that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about ThieAudio's warranty in India.

Pioneering Sonic Excellence Since 2019

Established in 2019 as the creative arm of Linsoul Audio, ThieAudio stands as a testament to audio innovation and excellence. With a handpicked team of top-notch engineers, ThieAudio is on a mission to redefine audio experiences for both audiophiles and professionals. The journey began with the groundbreaking ThieAudio Phantom, recognized internationally as a benchmark for planar magnetic headphones. Building on this success, ThieAudio introduced the Voyager and Legacy series, curated under the guidance of master audio engineer Chongjun, positioning them alongside leading international brands.

ThieAudio's Voyager series is tailored for musicians, offering innovative In-Ear Monitors (IEMs) designed to elevate their craft. For audiophiles and music enthusiasts, the Legacy series, featuring gems like ThieAudio Legacy 3, Legacy 4, Legacy 5, and Voyager 14, has garnered widespread acclaim for their meticulous design and exceptional sound quality. With an unwavering commitment to quality standards, ThieAudio consistently delivers thoughtfully crafted IEMs equipped with the latest advancements, ensuring a holistic and superior audio experience.

Explore Collection
Bloom Audio

"Monarch MK3 seems perfectly suited to deliver the wall of deep bass on Lady Gaga’s “Bad Romance;” the combination of rumble and impact feels like it’s slowly crushing your brain – but crushing it with exquisite detail and texture."

Read More

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Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

Our customer support is available Monday to Saturday: 10am-6:30pm.Average answer time: 2-3 hours

Customer Reviews

Based on 3 reviews
Rahul Nayyar (Chandigarh)
Bass plus music

Other iems: B2Dusk, Isn EST50, Symphonium meteor.
Source: RU6, mojo 2, RU7, Hiby RS6,FIio K7 and ibasso DX320 amp 11mk2s and amp12.
Disclosure: didn't buy it from Hpz but got them shipped by a friend from overseas.
For the review I found the best synergy with mojo 2 if I want to hear thumpy mid bass but sacrifice on soundstage and depth but gain musically.
And with
Ibasso Amp11 mk2s where I think the max potential of this iem came to light, for me. I don't know how chord electronics manages to do so much justice to bass delivery.
Anyways, the iem is capable of offering you a vivid, holographic soundstage, super controlled and still very thumpy mid bass. I test bass on 'The Plan - Tenet OST' and you can hear your ear drums feeling every bass attack in the first 15-20 seconds. The upper range is non-sibilant in all the genres I have tried and it never gets harsh. I am personally averse to piercing sibilance or high shimmer in my sound, so someone looking for a bright iem might like to skip it. It's not a neautralish running I would say. Balanced mids and highs with not too high sub bass or say extremely tastefully done sub bass and tremendous, thumpy, jackhammering mid bass that hits you like a wrecking ball. I still slap on like 6-8db more bass at around 100-125hz.
What it's not: it's not a relaxed presentation like an all BA symphonium meteor. Sure it's much more bassy, more technical and sort of better in most areas but meteor is simply non fatiguing where this iem has so much going on(in a very good way) that someone looking for a relaxed listen might find them a tad too engaging. I also happen to try UM mest mk2 and Solaris twilight for a few mins but I found both of their tuning to be relaxed compared to monarch. Twilight I liked much better than mk2. Personally, I would still like to keep meteor and mk2 both foe their distinctive abilities.
Also, the comfort on these(for me) was the best. Stock silicon tips fit like a glove on my ears and azla sednafit are a no brainer either ways. I can listen more on the azla . Silicon tips also don't hurt but just make their presence felt whereas azla is kinda non interfering.
Bass, soundstage, technicalities, imaging and instrument seperation. That is I would say are the hallmarks of this iem. I am sure you won't regret buying it for sure.

Hey there,

Thank you for taking the time to write this detailed review, we really appreciate the genuine feedback! Your review will definitely help fellow audiophiles to make an informed decision.

Valluri Anil Kumar (Pune)
The most remarkable in-ear monitors available at an exceptionally reasonable price.

These are by far the most comfortable in-ear monitors (IEMs) I have ever worn, outshining all the ones I have previously purchased.The IEMs have a comfortable fit that allows for extended listening without causing any discomfort. Cable is quite impressive with tangle-free.Upon initial auditory engagement with these In-Ear Monitors (IEMs), one's attention is immediately drawn to the mellifluous quality of the sub bass and bass frequencies. The auditory experience is notably pleasant and comforting to the listener. The other mid-range and treble can be heard with remarkable clarity, providing an equally comforting auditory experience. However, one potential drawback to consider is the overall lack of cohesiveness and crispiness.The sound stage is satisfactory, although it may not provide the desired sense of expansiveness.Although my experience in this field may be limited, after comparing this IEM with the Noble Audio Kublai Khan, Viking Ragnar, and SONY IER Z1R, I have noticed a lack of soul in the music range. Its like applying a soft Gaussian filter to the exquisite picture is akin to enhancing its visual appeal.It is strongly recommended for those individuals who are in need of calming auditory stimuli.In all ranges of frequencies, I find my overall experience to be delightfully soothing to my ears.I strongly suggest considering this IEM in this particular price range, as it offers an exceptional quality of listening experience.

Hey there, thank you for the great review and ratings! So delighted that you are loving your purchase. Hope you had a comfortable shopping experience. Cheers!

Murali Das (Mumbai)
An outstanding IEM

Though i didnt buy the Monarch MK3 on headphonezone i feel i have to write this review. It really is fantastic and once you start listening on it you will not want to listen on your other IEMs for a while. The clarity,detail,bass and treble extension are spot on. Songs feel presented on wide soundstage and are presented beautifully. Great value for money. My endgame IEM.

Thanks for the great review! We're glad you love the ThieAudio Monarch MKIII!

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