64 Audio Volur VS Fir Audio M4

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

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64 Audio Volur and Fir Audio M4 use 2DD+8BA and 1DD+3BA driver setups respectively. 64 Audio Volur costs $2,499 while Fir Audio M4 costs $1,900. 64 Audio Volur is $599 more expensive. 64 Audio Volur holds a decisive 2.5-point edge in reviewer scores (8.4 vs 6). 64 Audio Volur has better mids with a 0.5-point edge and 64 Audio Volur has significantly better treble with a 2.5-point edge.

Insights

Metric 64 Audio Volur Fir Audio M4
Bass 8.4 4
Mids 6 5.5
Treble 7 4.5
Details 8.4 5
Soundstage 7 7
Imaging 8.4 6.5
Dynamics 7 6
Tonality 6.8 5.6
Technicalities 7 6.4
Take these comparisons with a grain of salt—we don't have enough 64 Audio Volur and Fir Audio M4 reviews saved yet to provide an unbiased result.

64 Audio Volur Aggregated Review Score

Average Reviewer Scores

Jaytiss
Fresh Reviews Super* Review

Average Reviewer Score:

8.4

Very Positive


Fir Audio M4 Aggregated Review Score

Average Reviewer Scores

Shuwa-T
Crin

Average Reviewer Score:

6

Mixed


Reviews Comparison

64 Audio Volur (more reviews)

64 Audio Volur reviewed by Fresh Reviews

Fresh Reviews 9* * The score of this reviewer influences only the Gaming Score
Great IEM but big price. Not Huge Gain
Youtube Video Summary

64 Audio’s Volür is described as a holographic, highly resolving IEM with unusually high bass quantity that still preserves separation, layering, and air between notes. In games, positional cues feel 3D with immaculate depth and verticality; footsteps are prominent without smearing the mix, and vocals remain transparent with accurate timbre. The upper range presents as clean and non-sibilant, though certain upper-mid effects (e.g., shield cells/light taps) could use a touch more presence. For music, the stage is wider with singers a bit farther out, and micro-details—breaths, mic proximity, subtle slurs—emerge easily, delivering a fun yet technical listen.

Hardware choices matter: the preferred module is the gray (then silver, gold, and lastly black, which can feel fatiguing). Tip rolling significantly alters the presentation; foam tips shift it the most, while alternatives like Snailfit/SpinFit change stage depth and comfort. The driver pack—dual dynamic drivers in a true isobaric low end, six BAs for mids, an extra BA up top, plus 64 Audio’s TIA—underpins the speed, texture, and punch that remain controlled even at elevated bass levels. The main gripe is the included 3.5 mm cable on a flagship at this price; a balanced 4.4 mm option in the box would better fit expectations.

Overall, Volür is framed as an S-tier “unicorn” for gaming and a top-shelf choice for music if a bass-boosted but impeccably separated signature is the goal. It’s expensive, but for those in this bracket, the combination of impact, imaging, and resolution makes it a compelling daily driver—powerfully engaging while staying precise across the range.


Fresh Reviews original ranking

Fresh Reviews Youtube Channel
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64 Audio Volur reviewed by Super* Review

Super* Review 9* * score rescaled + normalized
If you are a lover of bass, this is a good option. Does not sacrify the rest of the sound signature
Youtube Video Summary

64 Audio’s Volür brings a bold, U-shaped tuning powered by a 10-driver array (8 BA + 2 DD in an isobaric setup) at a premium $2,500 price. The headline is the bass: a meaty, wallopy low end with unusually tight, textured attack that hits hard yet stays controlled, preserving clarity through the mids. Upper mids sit a touch relaxed, while an upper-treble zing adds bite, separation, and a roomy stage. 64 Audio’s APEX modules (M10/M12/M15/M20) primarily shift bass quantity; counterintuitively, the set shines most with the M20, where elevated bass balances the treble sparkle.

Build and ergonomics mirror recent 64 Audio releases: medium-sized shells with a slightly long nozzle (comfortable overall but fit stability can be just okay), plus a decent if slightly kinky stock cable. Technically, imaging, separation, and stage feel contrast-rich and more convincing than many peers. Tone preferences will matter: reduce the bass with lighter modules and the treble can dominate; leave the bass up and the presentation becomes satisfyingly muscular without smearing. As a proposition, Volür suits bass enthusiasts who want quantity and quality in tandem, earning a solid 4/5 for delivering big low-end thrills with high-end technical finesse.


Super* Review original ranking

Super* Review Youtube Channel

64 Audio Volur reviewed by Jaytiss

Jaytiss 7.8 Reviewer Score
B+ Tuning
A- Tech
64 Audio's finest.
Youtube Video Summary

64 Audio Volür comes across as a tour-de-force of bass tech: dual true isobaric dynamic drivers deliver deep, textured rumble with a “speaker-in-the-room” feel, while the Tia BA adds pronounced upper-treble energy. Ergonomics are excellent—compact metal shells, smooth nozzles that take tips well, and a best-in-class top two-pin connection that makes cable swaps effortless. Build feels built-to-last and the purple faceplate looks classy, though a more varied aesthetic across 64 Audio’s lineup would be welcome.

The APEX modules change flavor more than fundamentals: M20 adds a touch more bass, M15 strikes the best balance, M12 runs leaner, and MX is very flat and generally skippable; running it empty is a hard no. On music, Volür shines with EDM/modern productions, projecting holographic low-end and vivid dynamics; in dense mixes with strong instrumentals and vocals, the midrange can feel overrun and less engaging. Versus peers: U4s tracks similarly in bass level (with different modules), Elysian Annihilator brings stronger 3 kHz vocal presence while Volür counters with superior bass texture, and Monarch MKIII sounds more overtly U-shaped with greater mid/upper energy.

As a package, this is a fantastic IEM—arguably a favorite from 64 Audio—yet not flawless. The price is steep, the APEX ecosystem feels like paid tuning switches, and there’s some treble peaking plus occasional vocal thinness; a simpler, cheaper, M12-style fixed tuning would be a dream. For listeners prioritizing hip-hop, rap, and modern genres, Volür can absolutely be endgame; for vocal-centric or classical libraries, it’s impressive but not definitive. Overall verdict: a five-star recommendation for those who can afford it, anchored by class-leading bass and exceptional build, with clear trade-offs noted.

Mids: B Treble: A- Dynamics: A- Soundstage: A-

Jaytiss original ranking

Jaytiss Youtube Channel

Fir Audio M4 (more reviews)

Fir Audio M4 reviewed by Crin

Crin 6.5 Reviewer Score
B+ Tuning
B+ Tech
Too similar to the M3 to be worth the price markup.

Crin original ranking

Crin Youtube Channel

Fir Audio M4 reviewed by Shuwa-T

Shuwa-T 5.4 Reviewer Score
C Tuning
B Tech
Comment: Warm and lush midrange. Soundstage is surprisingly wide, midrange focused tuning Note definition is strangely subpar despite treble boost

Shuwa-T original ranking

Shuwa-T Website

Bass: C- Mids: B- Treble: C Soundstage: A- Details: C+ Imaging: B+

64 Audio Volur User Review Score

Average User Scores

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Based on 0 user reviews

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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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64 Audio Volur Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

6.7

Gaming Grade

B+

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

4.6

Gaming Grade

C

64 Audio Volur 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

A-
  • A competent technical showing keeps separation intact while delivering modest staging. It feels tidy even when recordings stack layers.
Mids B
The region sounds composed and expressive, giving vocals a natural spotlight. It keeps vocals front and center nicely.
Treble A-
The treble is exquisitely tuned, combining crystal detail with relaxed delivery. Micro-details emerge effortlessly.
Dynamics A-
Dynamic performance is excellent, combining sharp transients with strong contrast. Transients snap with authority.
Soundstage A-
Immersion steps up dramatically as width, depth, and height integrate into a cohesive hologram. Everything sounds naturally spaced.
Gaming B+
Respectable environmental presentation favors atmosphere over precision. Detects obvious directional cues while conveying game world ambiance. Bad value-to-cost for gaming purpose - not recommended

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.
Bass C-
Bass stays subdued, content to hover in the background. It keeps things tidy, yet unremarkable.
Mids B-
The region sounds agreeable overall, delivering clarity without flashiness. Slight warmth keeps things easy-going.
Treble C
The top end sounds acceptable but lacks the smoothness of higher tiers. Air is hinted at more than delivered.
Soundstage A-
Immersion steps up dramatically as width, depth, and height integrate into a cohesive hologram. Everything sounds naturally spaced.
Details C+
Decent detail retrieval that handles most textures while leaving some micro-information understated. Most textures come through cleanly.
Imaging B+
Good imaging with precise instrument placement and clear front/back localization. Positions snap into place convincingly.
Gaming C
Minimal environmental definition provides only general audio cues. Suitable for games where positioning isn't critical. Bad value-to-cost for gaming purpose - not recommended

64 Audio Volur User Reviews

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Fir Audio M4 User Reviews

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