Symphonium Helios VS Thieaudio Monarch MK3
IEM Comparison: Expert & Community Scores Side-by-Side
Symphonium Helios and Thieaudio Monarch MK3 use 4BA and 2DD+6BA+2EST driver setups respectively. Symphonium Helios costs $1,100 while Thieaudio Monarch MK3 costs $1,000. Symphonium Helios is $100 more expensive. Thieaudio Monarch MK3 holds a slight 0.3-point edge in reviewer scores (7.9 vs 8.1). Thieaudio Monarch MK3 carries a user score of 6.8. Thieaudio Monarch MK3 has better bass with a 0.5-point edge, Symphonium Helios has better treble with a 0.9-point edge, Symphonium Helios has slightly better details with a 0.4-point edge and Symphonium Helios has slightly better imaging with a 0.4-point edge.
Insights
| Metric | Symphonium Helios | Thieaudio Monarch MK3 |
|---|---|---|
| Bass | 7 | 7.5 |
| Mids | 7.9 | 7.7 |
| Treble | 8.6 | 7.8 |
| Details | 8.1 | 7.8 |
| Soundstage | 8 | 8 |
| Imaging | 7.8 | 7.4 |
| Dynamics | 7.5 | 7.3 |
| Tonality | 7.8 | 7.8 |
| Technicalities | 7.8 | 7.8 |
Symphonium Helios Aggregated Review Score
Average Reviewer Scores
Thieaudio Monarch MK3 Aggregated Review Score
Average Reviewer Scores
Symphonium Helios Details
Driver Configuration: 4BA
Tuning Type: bass-boosted neutral
Brand: Symphonium Top Symphonium IEMs
Price (Msrp): $1,100
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Thieaudio Monarch MK3 Details
Driver Configuration: 2DD+6BA+2EST
Tuning Type: U-Shaped
Brand: ThieAudio Top ThieAudio IEMs
Price (Msrp): $1,000
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Symphonium Helios User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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Thieaudio Monarch MK3 User Review Score
Average User Scores
Average User Score:
Based on 1 user reviews
6.8Cautiously Favorable
Symphonium Helios Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.8Gaming Grade
B+Thieaudio Monarch MK3 Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.5Gaming Grade
ASymphonium Helios Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.
Average Technical Grade
A- Good technical performance. Clear separation and decent detail retrieval across various tracks. Soundstage shows reasonable width and depth.
Thieaudio Monarch MK3 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A- Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.
Average Technical Grade
A- Good technical performance. Clear separation and decent detail retrieval across various tracks. Soundstage shows reasonable width and depth.
Symphonium Helios Reviews
8.1
Reviewer Score
Clean-sounding monitor with great bass decay Occasional splashy cymbals due to the treble extension
8
* score normalized
7.9
Reviewer Score
Exceptional treble with solid bass. Great techs. Some may find the midrange a bit clinical. Fit will be a dealbreaker to some. Cons: Poor fit.
7.9
Reviewer Score
Top tier clarity and great technicalities, other than a hint of BA timbre plasticness to it. Mid-bass recession is the con in the tuning, turning it into a dry IEM. Top performer nonetheless.
7.7
Reviewer Score
Great technicalities. Lacking that last leg of refinement in terms of coherency. Precogvision Youtube Channel
7.5
Reviewer Score
check links for more info: Crin Youtube Channel
Thieaudio Monarch MK3 Reviews
10
* score normalized
8.5
Reviewer Score
Better low-end texture and overall more engaging than MK2, but lacks the mid-range/vocal magic, so depending on your preference either is great. Still TOTL tech like MK2. Great all-rounder. Jays Audio Youtube Channel
8.5
Reviewer Score
Fatiging at times for me, too fun at times. Jaytiss Youtube Channel
8.2
Reviewer Score
Better bass response compared to the mk2 Trades off the lush midrange in place of a cleaner sounding, almost boring midrange
8
Reviewer Score
I prefer the Monarch MK II for its tonality, vocals, and timbre, but I get why some prefer the MK III. More bass, treble, and detail than the Monarch MK II. The vocal magic of the Monarch MK II is gone.Gizaudio Axel original ranking
Gizaudio Axel Youtube Channel
7.9
Reviewer Score
Elevated, well-textured mid-bass. Pleasant mids. Elevated upper-treble may be pesky to some.
Tim Tuned
2025-08-14
7.5
Reviewer Score
MK2 but more fun and more V-shape Not as natural in timbre Tim Tuned Youtube Channel
7.3
Reviewer Score
Still perplexingly poor bass performance, but improves upon the Monarch MKII's treble extension noticeably. Precogvision Youtube Channel
7.1
Reviewer Score
An improvement in the bass and treble department over the Mk2, but without the same special sauce in the mid-range and with some imaging problems still.
7*
* The score of this reviewer influences only the Gaming Score
Symphonium Helios User Reviews
"This is an example review"
Pros
- Example pro 1
- Example pro 2
Cons
- Example con 1
- Example con 2
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You need to be signed in to write your own reviewThieaudio Monarch MK3 User Reviews
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You need to be signed in to write your own reviewIf this is what 'fun' sounds like, I ain't about it.