TAS Commitment
Description
ThieAudio Monarch MKIV – Flagship IEM with Dual Tuning and EST Drivers
Dual Sonic Identities. Premium Craftsmanship. Unmatched Detail.
The ThieAudio Monarch MKIV redefines flagship-level performance by merging reference-grade precision with dynamic, hard-hitting bass. Equipped with the new dual tuning switch, users can effortlessly toggle between two distinct sound signatures—STANDARD for studio-accurate clarity or RUMBLE for a deeper, bass-enhanced experience.
Key Features
🎚️ Customizable Dual Tuning Modes
Switch on the fly between:
-
STANDARD Mode – Neutral, analytical tuning with clean mids and natural treble.
-
RUMBLE Mode – +3dB sub-bass boost with richer low-mids for bassheads and immersive listening.
🔊 IMPACT² Dual Subwoofer System
Two 8mm dynamic drivers in an isobaric chamber deliver clean, textured, and thunderous sub-bass. The result is deep impact and speed without compromising the overall balance.
🛠️ T6 Aircraft-Grade Aluminum Shell
Precision CNC-machined aluminum housing offers a lightweight yet durable build. Surface-hardened for resistance against scratches and sweat, ensuring both ruggedness and comfort.
✨ Refined Electrostatic Treble
Advanced Sonion EST drivers extend treble response up to 40kHz. Redesigned crossover networks enable seamless transitions and enhance spatial imaging, clarity, and air.
🧠 Next-Gen 4-Way Crossover Design
Monarch MKIV integrates 9 passive crossover components with 4 independent sound tubes for meticulous frequency control—offering both accuracy and musicality.
🎧 Chocolate Modular Cable
Bundled with a premium 8-core silver-plated OFC and pure OFC hybrid cable. The modular plug system supports both 3.5mm and 4.4mm connections, making it compatible with a wide range of sources.
Tuning Breakdown
STANDARD Mode:
-
10dB sub-bass with 150Hz cutoff ensures fast bass and clean midrange.
-
Neutral midrange tuning (150Hz–1kHz) and smoothed treble for refined clarity.
-
Focus on vocal clarity and realistic instrument reproduction.
RUMBLE Mode:
-
Enhanced sub-bass at 13dB.
-
Boosted 200Hz–500Hz region adds warmth and richness to male vocals, bass guitars, and foundational notes.
-
Ideal for those seeking fuller, engaging sound with body and depth.
Technical Specifications
-
Driver Configuration: 2 DD (8mm) + 6 BA + 2 EST (Sonion E50) + 1 Sonion 28UAP
-
Crossover: 4-way with 4 sound tubes
-
Frequency Response: 10Hz – 44kHz
-
Impedance: 10/9Ω ±1Ω @1kHz
-
Sensitivity: 100dB ±1dB @1kHz
-
THD: <1% @1kHz
Inside the Box
-
THIEAUDIO Monarch MKIV IEMs
-
Premium Chocolate Modular Cable
-
3 Pairs of THIEAUDIO Eartips (S/M/L)
-
Cable Tie, Cleaning Cloth
-
User Manual & Warranty Card
-
Monarch MKIV Stickers ×2
-
Thank You Card
Why Choose THIEAUDIO?
THIEAUDIO has become a global reference in the audiophile space, known for top-tier tunings and performance-driven design at accessible pricing. Backed by a dedicated international engineering team, the brand continues to push boundaries with innovations like the Monarch MKIV—crafted to satisfy both purists and enthusiasts alike.
You May Also Like
Recently Viewed
OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View all
TRUSTED BY OVER 60K+ MUSIC ENTHUSIASTS
Let customers speak for us
Good for:
>Vocal dominated tracks (general bollywood songs)
>Indian classical in vocal. string and wind instruments, acoustic guitars.
> Western classical focused on Piano, violin and cellos (e.g. Ludovico Einaudi, Lang Lang)
Need a little twigs in eq:
> Female vocal may need 2-3 db boost in at around 2k region.
> Old tracks designed for tapes and cassettes generally has treble boosted in default. Hence a 1-2 db pull down in 8k &16k band makes it more enjoyable (e.g track - Nahi samne from movie Taal)
Not good for:
> Heavy rock and metals that demands more throbbing base.
> Heavy electric guitars mainly power chords & overdrive base guitars sounds muddy.
> Lacks wide sound stage required for large and dynamic orchestral pieces. Like cornfield chase by Hans zimmer, Nostalgia by Yanni
> Hip-hop and Electronic tracks lacks the attacks and punchiness
VERDICT:
> Deep and tight base, buttery soft mids and well defined and perfectly rolled out treble that doesn't heart your ears after a while.
>Go for it if you are a bollywood song lover. You can't get anything better, at least at this price brakets.
> Shines well with Sigma-delta dacs but feels bit too warm for r2r Dacs. Although some people can prefer that. But do not use it with a very powerful amp. Personally I felt opamp like MAX97220 is more than enough.
> Base is deep and tight. So do not buy this if you want thumpy base.
> Not a flat responding iem. So do not consider it if you want an analytical piece. > Choose it if you are looking for long listening sessions with deep imotional attachment rather than analytical detailing.
I've been using this IEM for a couple of days now, and compared to the Moondrop CHU II, the treble feels noticeably improved.
Majestic sounding IEMs worth every penny
Good
best dac ever used the sound is incredibly good amazing the black colour is currently on top
Love it! My swimming sessions have become much more enjoyable and consistent. I also love listening to audiobooks and retro songs on these when not in water! Good product for a healthy lifestyle
KZ Duonic ka sound sach me bhut acha hai aur iski overall quality kamal ki hai. planar driver hone ki wajah se clarity next level milti hai. Bass tight hai aur instrument separation bhi bohot clear hai. Isme music suno bohot acha experience hota hai . Highly recommended if you love high-resolution audio!
It just works amazing with all of my audio products
These my first iems using it from last 2 months very nice very balanced sound
A beautiful pair of iems at this price range. Balanced sound, but engaging listening. Also good for monitoring.
Really good DAC and perfect for apple devices as it does not reduce the volume like few other DACs..and very good delivery experience from TAS..👍🏻
One of the best iem in terms of balanced sound with slight new meta tuning. Vocals come clean with controlled bass. (Maybe sub bass could be a bit more but it's okay). Music separation is top notch in its class. Detail retrieval is also class leading. This is the point of diminishing returns. For many this could be the end game iem for sure.
Various reviews on the net created a lot of desire and interest to possess this iem.
Hitherto iv been buying audio gear from some other website who did not have this iem in stock.
Thought of buying from Audiostore.
I spoke to Mr Pritam and finalised the deal. Personal interactions do add up to the textual.content you gather from the net. Delivery was exactly as promised.
My first impression of the iem is Spectacular sound reproduction!!!
Songs thatIheardliterallyfelt like being played in front of me.
Bass sufficiently good enough for every listener except bassheads. Of course bassheads would lose considerable amount of ther sonic capabilities.
Soundstage wide and imaging is excellent. Inspite of good bass every instrument is distinctly clear and precise.
Only request for Audiostore is to include other leading brands like Fatfreq, Fiio, Ibasso etc.
My honest review these are best and luxury looking IEMS and I love them and they fit in my ear perfectly for me and I love them
This IEM sound really good for everyday listening. The Bass has a nice punch,Vocals come through clear and the overall sound feels balanced and enjoyable.They’re comfortable to wear for long periods and block out a decent amount of outside noise.Easy to carry around as it’s comes with a pouch and Great for Music,Videos.Definitely worth it for the price, and specifically thanks for audiostore team.❤️❤️.
