Lime Ears Terra VS ThieAudio Monarch MK4

IEM Comparison: Expert & Community Scores Side-by-Side

Lime Ears Terra and ThieAudio Monarch MK4 use 1DD+5BA and 2DD+6BA+2EST driver setups respectively. Lime Ears Terra costs $1,200 while ThieAudio Monarch MK4 costs $1,149. Lime Ears Terra is $51 more expensive. ThieAudio Monarch MK4 holds a decisive 1-point edge in reviewer scores (8.5 vs 9.5). ThieAudio Monarch MK4 carries a user score of 9. ThieAudio Monarch MK4 has significantly better mids with a 1-point edge, ThieAudio Monarch MK4 has significantly better treble with a 1-point edge, ThieAudio Monarch MK4 has significantly better dynamics with a 1-point edge and ThieAudio Monarch MK4 has significantly better soundstage with a 1-point edge.

Insights

Jaytiss Score
Lime Ears Terra
8.5 /10
Jaytiss Score
ThieAudio Monarch MK4
9.5 /10
Score gap: 1.0
Metric Lime Ears Terra ThieAudio Monarch MK4
Mids 7 8
Treble 8 9
Soundstage 8 9
Dynamics 7 8
Tonality 7.5 8.5
Technicalities 8 9
Take these comparisons with a grain of salt—we don't have enough Lime Ears Terra and ThieAudio Monarch MK4 reviews saved yet to provide an unbiased result.

Jaytiss Reviews Comparison

Lime Ears Terra reviewed by

Jaytiss 8.5 Reviewer Score
A Tuning
A+ Tech
Best value of the Lime Ears.
Youtube Video Summary

Build and presentation hit boutique vibes: a machined-aluminum shell with a clever nozzle dip that grips tips securely, a flat 2-pin socket with a top filter, and smooth finishing that feels premium in ear. The accessory set fits the price—SpinFit W1 and foam tips, cleaner, pouch—and the leatherette puck case looks simple but feels surprisingly durable. The stock 4.4 mm cable is aesthetically pleasing yet a bit stiff, with a loose chin slider; red/blue markers make orientation easy.

Tonally, Terra skews brighter with a touch of sharpness up top, bringing strong micro-detail and air while keeping a tasteful, impactful bass shelf. The 6-driver hybrid (including a 7 mm titanium DD for lows) delivers confident technicalities: fast attacks, clean separation, and a wide-open stage. FR observations show a gradual bass rise, good treble extension, and a mid-treble lift (around the 8 k region) that adds sparkle and excitement but can read hot for sensitive listeners.

Against peers, Terra tracks a refined “Harman-ish” contour with extra energy, feeling more dynamic and lively than several mid/high-tier alternatives while keeping mids even and uncluttered. Trade-offs exist: a hint of metallic timbre, occasional upper-mid glare, and imaging that can soften at micro level; yet the overall mix of bass quality, clarity, and stage makes music engaging. At $1,200, the Polish boutique package reads as a serious, distinctive choice—highly recommendable if a brighter tilt and vivid treble are on the wish list.

Mids: A- Treble: A+ Dynamics: A- Soundstage: A+

Jaytiss original ranking

Jaytiss Youtube Channel

ThieAudio Monarch MK4 reviewed by

2025-07-25
Jaytiss 9.5 Reviewer Score
S- Tuning
S Tech
Detailed fun, rich bass. It's hard to fault.
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.

Mids: A+ Treble: S Dynamics: A+ Soundstage: S

Jaytiss original ranking

Jaytiss Youtube Channel
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Price: $1,149

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Lime Ears Terra Details

Driver Configuration: 1DD+5BA

Tuning Type: U-Shaped

Brand: Lime Ears Top Lime Ears IEMs

Price (Msrp): $1,200

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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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Lime Ears Terra Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • It presents a smooth, well-integrated tonal balance that plays nicely with many styles. It maintains natural timbre across the range.

Average Technical Grade

A+
  • The tuning feels expertly organized, marrying agile dynamics with well-defined spatial cues. Technical listeners will appreciate the poise.
Mids A-
Midrange performance is excellent, with natural timbre and great detail. Vocals feel lifelike and full-bodied.
Treble A+
The treble performance feels luxurious, marrying air, control, and excitement. You can place every high-frequency element.
Dynamics A-
It delivers crisp, authoritative dynamics that keep music thrilling. Subtle level shifts are clearly conveyed.
Soundstage A+
Three-dimensional layering becomes effortless, placing performers on a lifelike virtual stage. Venue ambience wraps around convincingly.

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.
Mids A+
You get reference-worthy mids that combine transparency, texture, and depth. It brings out emotional nuance beautifully.
Treble S
Treble reaches reference-class perfection with limitless extension and ease. There's limitless extension and clarity.
Dynamics A+
Expect thrilling dynamics that move effortlessly from whispers to roars. Explosive moments sound thrilling.
Soundstage S
Reference-class soundstage delivering a perfectly spherical presentation with seemingly infinite space. Spatial cues extend seemingly without limit.

Lime Ears Terra User Reviews

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ThieAudio Monarch MK4 User Reviews

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Cyantix
9

Impressive sound experience and the built quality is finally worth the price (compared to Mk3). I "upgraded" my Mk3 and I am happy with it.

Tuning: S Tech: S Bass: A+ Mids: S- Treble: S- Dynamics: S Soundstage: S- Details: S Imaging: S-
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.

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