Thieaudio Monarch Mk2 VS ThieAudio Monarch MK4
IEM Comparison: Expert & Community Scores Side-by-Side
Thieaudio Monarch Mk2 and ThieAudio Monarch MK4 use 1DD+6BA+2EST and 2DD+6BA+2EST driver setups respectively. Thieaudio Monarch Mk2 costs $1,000 while ThieAudio Monarch MK4 costs $1,149. ThieAudio Monarch MK4 is $149 more expensive. ThieAudio Monarch MK4 holds a decisive 1-point edge in reviewer scores (8.5 vs 9.5). User ratings place Thieaudio Monarch Mk2 at 8.5 and ThieAudio Monarch MK4 at 9. ThieAudio Monarch MK4 has significantly better treble with a 1-point edge, ThieAudio Monarch MK4 has significantly better dynamics with a 2-point edge and ThieAudio Monarch MK4 has significantly better soundstage with a 1-point edge.
Insights
| Metric | Thieaudio Monarch Mk2 | ThieAudio Monarch MK4 |
|---|---|---|
| Mids | 8 | 8 |
| Treble | 8 | 9 |
| Soundstage | 8 | 9 |
| Dynamics | 6 | 8 |
| Tonality | 7.5 | 8.5 |
| Technicalities | 8 | 9 |
Jaytiss Reviews Comparison
Thieaudio Monarch Mk2 reviewed by
8.5
Reviewer Score
Youtube Video Summary
Build & accessories: Compact shell with a slightly old-school shape and flat 2-pin connectors, secure fit, and a nozzle some may find a bit much. The package includes Thieaudio’s large, sturdy case, multiple tips, a cleaning brush, and a fabric-sheathed stock cable with a solid chin slider and a durable Y-split. The cable’s modular plug system (2.5/3.5/4.4) locks in confidently and feels well made.
Sound: a neutral foundation with a dash of fun—clean upper mids, tasteful sparkle, and tight, articulate bass. Unit variance shows on graphs (his sample reads a bit bassier with slightly more treble vs other measurements), but the core tuning stays intact: rich mids, smooth presence, and airy extension that present music as natural, wide, and open. Versus Monarch MKIII, this MKII feels less bright and less fatiguing, with fuller mids. Compared to Annihilator 2023, MKII is flatter and more even (Annihilator hits harder and has a 10k zing some hear as “fake”). Against Lime Ears Tera, MKII is a touch warmer and easier; versus the pricier Europa, it tracks similarly on paper but wins on comfort and value; and it offers more body than budget darlings like Hexa, which can come off lean.
Verdict: a high-tier all-rounder prized for midrange timbre, air/detail, note weight, and imaging. It reads neutral-natural with just enough excitement to stay engaging over long sessions. Personal taste and fit still matter—always demo if possible—but within this preference space, Monarch MKII remains a special, well-balanced choice that continues to earn its spot among top IEMs.
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ThieAudio Monarch MK4 reviewed by
2025-07-25
9.5
Reviewer Score
Youtube Video Summary
Priced between $1,150 and $1,300 depending on custom faceplate options like the butterfly design shown, the Thieaudio Monarch MK IV boasts exceptional build quality with a large but well-contoured titanium shell offering a secure and comfortable fit. Key features include the innovative rumble switch for adjustable bass levels on the fly, a durable two-pin connector, and a solid feel that inspires confidence in longevity. While the included accessories are considered fair but unexciting, the shell's customization potential and rugged construction are major highlights.
Sonically, the Monarch MK IV delivers a detailed, exciting, and clean sound signature that stands as the best in the Monarch lineage. The rumble switch provides two distinct profiles: the red switch (no rumble) offers a balanced, tactful bass presentation, while the gold switch (rumble) adds a satisfying sub-bass shelf ideal for genres like hip-hop. Treble performance is notably improved over the MK III, though a 10k peak requires careful ear tip selection for some listeners. It trades blows with flagships like the $3,000 Annihilator (better sub-bass focus) and the $1,800 Elysian Apostle (more vocal forward), often matching or exceeding their technicalities while offering its unique tuning flexibility.
Scoring a top-tier 9.8, the Monarch MK IV earns its place through a compelling combination of premium build, the highly functional rumble switch, and outstanding sound quality that feels both special and refined. While acknowledging the high price, it represents significant value against competitors like the $2,000 Thieaudio Valhalla or the fiddly Grand Maestro, offering a feature-rich, durable, and sonically excellent package that justifies its position as a current summit-fi favorite.
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Price: $1,149
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Thieaudio Monarch Mk2 Details
Driver Configuration: 1DD+6BA+2EST
Tuning Type: Neutral with Bass Boost
Brand: ThieAudio Top ThieAudio IEMs
Price (Msrp): $1,000
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ThieAudio Monarch MK4 Details
Driver Configuration: 2DD+6BA+2EST
Tuning Type: Neutral with Bass Boost, U-Shaped
Brand: ThieAudio Top ThieAudio IEMs
Price (Msrp): $1,149
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Thieaudio Monarch Mk2 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Overall balance feels confident and refined, rewarding long listening sessions. A reliable all-rounder for everyday listening.
Average Technical Grade
A+- You get an articulate, polished performance with immersive stage depth and great control. There's a sense of polish across the whole spectrum.
ThieAudio Monarch MK4 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
S-- The response feels meticulously dialed in, combining neutrality with inviting warmth. Dynamic swings remain tonally accurate.
Average Technical Grade
S- The technical ceiling is high here, revealing fine gradations without breaking composure. Every instrument carves out its own pocket in the mix.
Thieaudio Monarch Mk2 User Reviews
Share your experience and build your personal ranking list.
You need to be signed in to write your own reviewMy vocal magic
Pros
Vocals that make you smile. THE most musical set for me.Cons
Bass is okay for the price. Very occasional upper-mid sharpnessThieAudio Monarch MK4 User Reviews
Share your experience and build your personal ranking list.
You need to be signed in to write your own reviewImpressive sound experience and the built quality is finally worth the price (compared to Mk3). I "upgraded" my Mk3 and I am happy with it.
Pros
I don't regret buying those. I would not describe them as a huge upgrade to the Mk3 in terms of sound, but it is noticeable. Built quality and overall experience much more premium than MK3.Cons
The designs of the shells are a matter of taste.Find your next IEM:
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