Fir Audio E12 and Metalure Glacier are in-ear monitors. Fir Audio E12 costs $1,799 while Metalure Glacier costs $1,629. Fir Audio E12 is $170 more expensive. Metalure Glacier holds a decisive 4.4-point edge in reviewer scores (4 vs 8.4). Metalure Glacier has significantly better mids with a 3.5-point edge, Metalure Glacier has significantly better treble with a 5.8-point edge, Metalure Glacier has significantly better dynamics with a 4.2-point edge and Metalure Glacier has significantly better soundstage with a 3.5-point edge.
Insights
Metric | Fir Audio E12 | Metalure Glacier |
---|---|---|
Bass | 4 | 8.4 |
Mids | 4 | 7.5 |
Treble | 2 | 7.8 |
Details | 4 | 8.6 |
Soundstage | 5 | 8.5 |
Imaging | 4 | 8.8 |
Dynamics | 4 | 8.2 |
Tonality | 4 | 8 |
Technicalities | 2 | 7.8 |
Fir Audio E12 Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
4Unfavorable
Metalure Glacier Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.4Very Positive
Reviews Comparison
Fir Audio E12 reviewed by Jaytiss
Metalure Glacier reviewed by Jaytiss
2025-10-17Youtube Video Summary
Metalure Glacier rolls in as a nine-driver hybrid (DD+BA+EST) around $1,600, proudly made in the USA, and it looks the part: a metallic, semi-custom shell with a gold nozzle, clean L/R markings, and flat 0.78mm 2-pin sockets. The stock cable feels substantial with a working chin slider and tidy Y-split, and the matching case leans premium. Fit is easy—slightly compact shell, secure seal, zero comfort complaints.
Sonically it’s a bassy, clean presentation with good micro-detail, natural male/female vocals, and a tasteful bass shelf. The graph tells the story: a bit of upper-mid lift, a spicy ~8 kHz peak, and a notable 5–6 kHz dip that darkens the mid-treble, trading some “twinkle” (11–13 kHz) for smoothness. Despite the energy up top, it doesn’t shout; balance is helped by the low-end weight. Sensitivity around 3 kHz/8 kHz will decide comfort for some ears, and a touch of EQ—easing upper-mids/8 kHz—can make it even more even-keeled.
Against peers, Elysian Acoustic Labs Apostle brings thicker mids, stronger bass and imaging with less 8 kHz bite; DUNU Glacier feels more refined in bass texture and air yet the Metalure counters with a richer, fun tilt many will prefer. A “YU9” comparator sounds a bit flatter and less peaky up top but can’t match the build and accessories here. Net takeaway: a fun, detailed all-rounder with minor treble quirks, strong ergonomics, and genuine high-end execution. It earns an S–-tier nod—potential endgame for listeners who vibe with its V-leaning balance.
Jaytiss Youtube Channel
Metalure Glacier (more reviews)
Metalure Glacier reviewed by Web Search
2025-10-19
The Metalure Glacier is a 9-driver tribrid—1DD+6BA+2EST—positioned as the brand’s flagship; this configuration is confirmed in independent coverage and frames its focus on treble extension and layering . MSRP is listed at $1,629 on the manufacturer’s store, and accessories include a balanced 4.4 mm cable and leather carry case, aligning the package with flagship norms .
Tonally, reports describe a controlled sub-bass lift with clean mids and extended upper-treble “air,” yielding strong clarity and a notably large soundstage for spacious, layered mixes rather than overt warmth . Driveability is straightforward given its published 11 Ω impedance and 120 dB/mW sensitivity, though the combination also implies sensitivity to source noise; a quiet source is advisable .
Technically, the Glacier’s strengths are stage width, separation, and treble resolution, with imaging that remains stable in dense passages—traits repeatedly highlighted in third-party impressions . At its price, the value case hinges on whether a spacious, “airy” presentation and top-end finesse outweigh a comparatively restrained mid-bass warmth; those priorities will determine how compelling its overall proposition is.
Fir Audio E12 Details
Driver Configuration: n/a
Tuning Type: n/a
Price (Msrp): $1,799
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Metalure Glacier Details
Driver Configuration: 1DD+6BA+2EST
Tuning Type: U-Shaped
Brand: Metalure Top Metalure IEMs
Price (Msrp): $1,629
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Fir Audio E12 User Review Score
Average User Scores
Average User Score: n/a
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Metalure Glacier User Review Score
Average User Scores
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Fir Audio E12 Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
1.1Gaming Grade
E-Metalure Glacier Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.3Gaming Grade
BFir Audio E12 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
C-- Expect a patchy tonal profile that makes instrumentation feel mismatched. EQ is almost mandatory to tame the response.
Average Technical Grade
E+- A foggy, one-dimensional presentation wipes out layering and obscures the finer points of a mix. Spatial cues barely register at all.
Metalure Glacier 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- The balance of resolution and space feels assured, keeping complex passages coherent. Layering is convincing on most studio mixes.
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