UM Mavis and Symphonium Helios SE are in-ear monitors. UM Mavis costs $1,079 while Symphonium Helios SE costs $1,150. Symphonium Helios SE is $71 more expensive. Symphonium Helios SE holds a decisive 2.4-point edge in reviewer scores (5.6 vs 8). Symphonium Helios SE has significantly better bass with a 2-point edge, Symphonium Helios SE has significantly better mids with a 2.5-point edge, Symphonium Helios SE has significantly better treble with a 3-point edge, Symphonium Helios SE has significantly better details with a 2.5-point edge and Symphonium Helios SE has significantly better imaging with a 1-point edge.
Insights
Metric | UM Mavis | Symphonium Helios SE |
---|---|---|
Bass | 5 | 7 |
Mids | 5.5 | 8 |
Treble | 5 | 8 |
Details | 5.5 | 8 |
Soundstage | 6 | 6 |
Imaging | 6.5 | 7.5 |
Dynamics | 7 | 7 |
Gaming capabilities | 4.8 | 6.9 |
UM Mavis Aggregated Review Score
UM Mavis Average Reviewer Scores
Symphonium Helios SE Aggregated Review Score
Symphonium Helios SE Average Reviewer Scores
UM Mavis Details
Driver Configuration: n/a
Tuning Type: n/a
Price (Msrp): $1,079
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Symphonium Helios SE Details
Driver Configuration: 4BA
Tuning Type: n/a
Price (Msrp): $1,150
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UM Mavis User Review Score
UM Mavis Average User Scores
Average User Score: n/a
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Symphonium Helios SE User Review Score
Symphonium Helios SE Average User Scores
Average User Score: n/a
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UM Mavis Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
4.8Gaming Grade
CSymphonium Helios SE Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.9Gaming Grade
B+UM Mavis Scorings
Average Technical & Tuning Grades
Average Tunign Grade
C+- Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.
Average Technical Grade
B- Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
Symphonium Helios SE 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.
UM Mavis Reviews
UM Mavis reviewed by: Shuwa-T
Comment: Warm and inoffensive. Very natural sounding Limited by clarity
Symphonium Helios SE Reviews
Symphonium Helios SE reviewed by: Jays Audio
Best Treble around it's price. Super airy but still smooth. Bass-scoop isn't as bad as I thought, but those who want mid-bass - avoid it. Jays Audio Youtube Channel
Symphonium Helios SE reviewed by: Precogvision
See Helios but with more mid-treble and mid-bass. Precogvision Youtube Channel
Symphonium Helios SE reviewed by: Nymz
Limited to 50 units. A huge improvement fit wise versus the original. Great TOTL all-rounder. Great sub, upper mids and treble. Mid-bass is an improvement but still not boosted. Great technical chops while fixing the sense of plasticness the original had.
UM Mavis User Reviews
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