Thieaudio Monarch MK3 VS 64 Audio U4S

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

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Thieaudio Monarch MK3 and 64 Audio U4S use 2DD+6BA+2EST and 1DD+3BA driver setups respectively. Thieaudio Monarch MK3 costs $1,000 while 64 Audio U4S costs $1,100. 64 Audio U4S is $100 more expensive. Thieaudio Monarch MK3 holds a clear 0.7-point edge in reviewer scores (8.5 vs 7.8). Thieaudio Monarch MK3 carries a user score of 6.8. 64 Audio U4S has significantly better mids with a 1-point edge, Thieaudio Monarch MK3 has significantly better treble with a 1-point edge, Thieaudio Monarch MK3 has significantly better dynamics with a 1-point edge and Thieaudio Monarch MK3 has significantly better soundstage with a 2-point edge.

Insights

Jaytiss Score
Thieaudio Monarch MK3
8.5 /10
Jaytiss Score
64 Audio U4S
7.8 /10
Score gap: 0.8
Metric Thieaudio Monarch MK3 64 Audio U4S
Mids 7 8
Treble 7 6
Soundstage 8 6
Dynamics 8 7
Tonality 7.5 6.8
Technicalities 7 6
Take these comparisons with a grain of salt—we don't have enough Thieaudio Monarch MK3 and 64 Audio U4S reviews saved yet to provide an unbiased result.

Jaytiss Reviews Comparison

Thieaudio Monarch MK3 reviewed by

Jaytiss 8.5 Reviewer Score
A Tuning
A- Tech
Fatiging at times for me, too fun at times.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A- Treble: A- Dynamics: A+ Soundstage: A+

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64 Audio U4S reviewed by

Jaytiss 7.8 Reviewer Score
B+ Tuning
B Tech
It's a solid set, with great build quality, but sonically isn't the specialist that I want it to be.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A+ Treble: B Dynamics: A- Soundstage: B

Thieaudio Monarch MK3 Details

Driver Configuration: 2DD+6BA+2EST

Tuning Type: U-Shaped

Top U-Shaped IEMs

Brand: ThieAudio Top ThieAudio IEMs

Price (Msrp): $1,000

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$999
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64 Audio U4S Details

Driver Configuration: 1DD+3BA

Tuning Type: Neutral, Neutral with Bass Boost

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Brand: 64 Audio Top 64 Audio IEMs

Price (Msrp): $1,100

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Thieaudio Monarch MK3 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 a controlled, composed performance, marrying decent clarity with a still-modest sense of space. A safe technical performer for the price bracket.
Mids A-
The mids sound lush and articulate, capturing emotion effortlessly. Strings and keys shimmer with realism.
Treble A-
Treble performance is excellent—airy, extended, and beautifully controlled. It reveals subtle studio ambiance.
Dynamics A+
It captures both explosive hits and delicate shifts with lifelike realism. Micro-dynamics shimmer through the mix.
Soundstage A+
Three-dimensional layering becomes effortless, placing performers on a lifelike virtual stage. Venue ambience wraps around convincingly.

64 Audio U4S Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • It sounds pleasant overall, with some uneven spots that hint at room for refinement. Vocals remain pleasant despite the imperfections.

Average Technical Grade

B
  • An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Mids A+
Midrange quality is superb, rich with resolving power and transparency. Micro-details leap out effortlessly.
Treble B
Expect crisp, well-balanced treble that keeps shimmer intact. You hear reverbs decay naturally.
Dynamics A-
You get outstanding dynamic agility, from subtle nuances to big hits. Impact comes with quick recovery.
Soundstage B
Good soundstage with proper width and depth, placing instruments in clearly defined positions. Instruments sit in their own lanes.

Thieaudio Monarch MK3 User Reviews

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Makavelian
6.8

If this is what 'fun' sounds like, I ain't about it.

Pros
Detail retrieval
Cons
Recessed mids and odd timbre.

64 Audio U4S User Reviews

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0.0

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