Symphonium Crimson VS Fir Audio M4
IEM Comparison: Expert & Community Scores Side-by-Side
Symphonium Crimson and Fir Audio M4 use 4BA and 1DD+3BA driver setups respectively. Symphonium Crimson costs $1,500 while Fir Audio M4 costs $1,900. Fir Audio M4 is $400 more expensive. Symphonium Crimson holds a decisive 2.5-point edge in reviewer scores (8.4 vs 6). Symphonium Crimson has significantly better bass with a 4.6-point edge, Symphonium Crimson has significantly better mids with a 2.2-point edge, Symphonium Crimson has significantly better treble with a 3-point edge, Symphonium Crimson has significantly better soundstage with a 1.3-point edge, Symphonium Crimson has significantly better details with a 3.1-point edge and Symphonium Crimson has significantly better imaging with a 2-point edge.
Insights
| Metric | Symphonium Crimson | Fir Audio M4 |
|---|---|---|
| Bass | 8.6 | 4 |
| Mids | 7.7 | 5.5 |
| Treble | 7.5 | 4.5 |
| Details | 8.1 | 5 |
| Soundstage | 8.3 | 7 |
| Imaging | 8.5 | 6.5 |
| Dynamics | 7 | 6 |
| Tonality | 8.1 | 5.6 |
| Technicalities | 8.3 | 6.4 |
Symphonium Crimson Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.4Very Positive
Fir Audio M4 Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
6Mixed
Reviews Comparison
Symphonium Crimson reviewed by Shuwa-T
8.4
Reviewer Score
Fir Audio M4 reviewed by Shuwa-T
5.4
Reviewer Score
Symphonium Crimson (more reviews)
Symphonium Crimson reviewed by Z-Reviews
9.5
* score rescaled + normalized
Youtube Video Summary
Symphonium Crimson lands with a bang: a four–BA, four-way crossover design that somehow delivers epic energy without a dynamic driver. Tonality reads neutral-bright with thunderous sub-bass—not a basshead hump, but a slab of solid, deep extension that stays clean. Mids stay clear for vocals and strings, treble rises for sparkle and excitement, and the presentation spreads out like pulled-apart audio “shreds” across a big canvas. The effect is clarity, detail, and slam that feel bigger than the driver count suggests, making music and film scores straight-up addictive.
Technical notes matter here. Nominal impedance is a weirdly low ~6Ω, so source pairing can swing results; the set scales and sounds happiest on robust gear that can keep low-impedance loads stable. Despite the armature array, coherency stays intact, dynamics hit harder than expected, and volume headroom invites goosebumps. It’s not a “bass monster,” yet the sub-bass authority and lively treble make it exciting rather than polite, with imaging that feels wide and tactile.
Ergonomics are the gripe list: the short nozzle can challenge seal and the premium cable lacks a formed ear hook, encouraging twist and loosening—tip rolling (even reversed-orientation tricks) helps. Build is flashy—carbon-fiber shell, red inlays, metal case that’s too hefty for travel. Pricing sits around $1,500 (or $1,700 with 8-wire cable); for sheer fun, impact, and best-in-brand performance, the value argument holds. For all-day softness, something like Twilight stays comfier; for movies, big scores, and “wow” sessions, Crimson feels like a must-grab and arguably the best Symphonium to date.
Z-Reviews Youtube Channel
Symphonium Crimson reviewed by Jays Audio
9
Reviewer Score
Symphonium Crimson reviewed by Yifang
8.5
Reviewer Score
Symphonium Crimson reviewed by Nymz
8.5
Reviewer Score
Symphonium Crimson reviewed by Precogvision
8
Reviewer Score
Precogvision Youtube Channel
Symphonium Crimson reviewed by Smirk Audio
7.9
Reviewer Score
Symphonium Crimson reviewed by Jaytiss
7.8
Reviewer Score
Jaytiss Youtube Channel
Symphonium Crimson reviewed by Head-Fi.org
8.3
* score rescaled + normalized
Fir Audio M4 (more reviews)
Fir Audio M4 reviewed by Crin
6.5
Reviewer Score
Symphonium Crimson Details
Driver Configuration: 4BA
Tuning Type: U-Shaped
Brand: Symphonium Top Symphonium IEMs
Price (Msrp): $1,500
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Fir Audio M4 Details
Driver Configuration: 1DD+3BA
Tuning Type: Neutral, Warm
Price (Msrp): $1,900
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Symphonium Crimson User Review Score
Average User Scores
Average User Score: n/a
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Fir Audio M4 User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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Symphonium Crimson Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7.2Gaming Grade
A-Fir Audio M4 Gaming Score
Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
4.6Gaming Grade
CSymphonium Crimson Scorings
Average Technical & Tuning Grades
Average Tunign Grade
A+- Tuning feels refined, blending frequencies with convincing realism and engagement. Transitions between registers feel effortless.
Average Technical Grade
A+- It sounds refined and controlled, keeping instruments neatly separated with immersive staging. Busy arrangements remain neatly organized.
Fir Audio M4 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
B-- Expect a friendly tonal balance that could use polish but remains inviting. Great for casual listening, less so for purists.
Average Technical Grade
B- Technical ability is serviceable, keeping basic detail intact across simpler tracks. It keeps up with acoustic tracks without much fuss.
Symphonium Crimson User Reviews
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