FATFreq Grand Maestro VS 64 Audio Volur

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

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FATFreq Grand Maestro and 64 Audio Volur use 1DD+8BA+4EST and 2DD+8BA driver setups respectively. FATFreq Grand Maestro costs $3,334 while 64 Audio Volur costs $2,499. FATFreq Grand Maestro is $835 more expensive. FATFreq Grand Maestro holds a slight 0.2-point edge in reviewer scores (8.6 vs 8.4). FATFreq Grand Maestro has better mids with a 0.8-point edge, FATFreq Grand Maestro has better treble with a 0.5-point edge, FATFreq Grand Maestro has significantly better dynamics with a 1.5-point edge and FATFreq Grand Maestro has significantly better soundstage with a 2-point edge.

Insights

Metric FATFreq Grand Maestro 64 Audio Volur
Bass 7.8 8.4
Mids 6.8 6
Treble 7.5 7
Details 6.8 8.4
Soundstage 9 7
Imaging 7.3 8.4
Dynamics 8.5 7
Tonality 8.2 6.8
Technicalities 8.1 7
Take these comparisons with a grain of salt—we don't have enough 64 Audio Volur reviews saved yet to provide an unbiased result.

FATFreq Grand Maestro Aggregated Review Score

Average Reviewer Scores

Nymz
Smirk Audio
Yifang
Jays Audio Jaytiss Head-Fi.org Web Search

Average Reviewer Score:

8.6

Excellent


64 Audio Volur Aggregated Review Score

Average Reviewer Scores

Jaytiss
Fresh Reviews Super* Review

Average Reviewer Score:

8.4

Very Positive


Reviews Comparison

FATFreq Grand Maestro reviewed by Jaytiss

Jaytiss 9.3 Reviewer Score
A+ Tuning
A+ Tech
Is one of those sets that can do it all. Very impressive.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A- Treble: A+ Dynamics: S Soundstage: S

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
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FATFreq Grand Maestro (more reviews)

FATFreq Grand Maestro reviewed by Jays Audio

Jays Audio 9.5 Reviewer Score
S Tuning
S Tech
The best basshead set. That is all. EXPENSIVE. If you just want bass HBB Punch way better value.
Youtube Video Summary

FATFreq Grand Maestro aims squarely at a refined, sub-boosted tuning rather than a crude bass cannon. The bass quality shows real pedigree—excellent control, quick decay, and that clean, floor-shaking sub-bass rumble without smearing the mids. Treble reaches higher with better extension than typical basshead fare, and overall resolution, separation, and balance feel “endgame” in polish. For listeners who want muscular low-end that still plays nice with vocals and air, this tuning reads as a mature, high-performance take on “bass + hi-fi.”

But for pure basshead cravings, Grand Maestro doesn’t go overboard—it’s a bassy set, not a “basshead or bust” one. Compared with FATFreq’s own Scarlet Mini (or Maestro Mini), it brings less sheer quantity and “skull-rattle,” trading slam for finesse; next to ultra-dark hammers like HBB Hades, it’s far more balanced and controlled. The catch is diminishing returns: while the Grand Maestro is the most refined and technically capable among these bass-tilted options, those chasing maximum pound-for-pound slam may find better value in the Minis, and those wanting reckless low-end excess will still gravitate to sets like Hades. For most non-basshead audiophiles, though, Grand Maestro’s blend of sub-bass authority and top-end refinement hits the sweet spot.


Jays Audio original ranking

Jays Audio Youtube Channel

FATFreq Grand Maestro reviewed by Yifang

Yifang 8.5 Reviewer Score
S- Tuning
S- Tech

FATFreq Grand Maestro reviewed by Smirk Audio

Smirk Audio 7.7 Reviewer Score
A Tuning
A Tech
check links for more info:

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

Bass: S- Mids: A Treble: A Dynamics: A+ Details: A Imaging: A

FATFreq Grand Maestro reviewed by Nymz

Nymz 6.5 Reviewer Score
B+ Tuning
B Tech
See Maestro SE but with worse bass.

Nymz original ranking

Nymz Website

Bass: A- Mids: B Treble: A- Details: B Imaging: A-

FATFreq Grand Maestro reviewed by Head-Fi.org

Head-Fi.org 9.5 * score rescaled + normalized
7 community members have rated the FatFreq Grand Maestro at an average of 5.0/5 on Head-Fi. Overall sentiment: Masterpiece.

URL to full Review

Head-Fi.org original ranking

FATFreq Grand Maestro reviewed by Web Search

uses AI-Search to turn user, reddit and head-fi reviews into clear, concise summaries.
Web Search 9 Reviewer Score
S Tuning
S Tech

The FATFreq Grand Maestro offers a highly adaptable sound signature through its NOAH modules and vocal switches, enabling four distinct tuning profiles. The black NOAH module emphasizes sub-bass "slam," while the blue variant provides tighter "rumble" control; combined with the vocal switch, these allow shifts from a bass-forward signature to a more mid-centric presentation. Bass is deep and authoritative but avoids midrange bleed, while the treble—handled by electrostatic drivers—delivers clarity without sibilance or fatigue.

Technically, it excels in imaging precision and creates an immersive, three-dimensional soundstage that positions instruments with remarkable specificity. However, its large shell size may challenge those with smaller ears, and it demands power-hungry sources—often requiring high-gain amplification to reach full potential. The deluxe package includes both NOAH modules and an upgraded cable, enhancing its tuning flexibility.


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

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

FATFreq Grand Maestro User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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64 Audio Volur User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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FATFreq Grand Maestro Gaming Score

Gaming Score & Grade

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

Gaming Score

6.6

Gaming Grade

B+

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+

FATFreq Grand Maestro 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+
  • Layering is confident and precise, backed by imaging that locks elements firmly in place. Micro-details peek through without sounding forced.
Bass A
The bass hits with conviction, offering both punch and clarity. It reaches low with confidence and control.
Mids B+
Expect a confident midrange that keeps details audible without harshness. Acoustic arrangements sound engaging.
Treble A
Expect effortless extension and clarity that keep the top end sparkling yet smooth. Layering in upper registers is impressive.
Dynamics S-
The presentation feels expansive, letting micro and macro dynamics breathe. There's a sense of limitless headroom.
Soundstage S
Spatial cues extend effortlessly in every direction, wrapping you in a boundless sonic dome. Every direction feels accessible.
Details B+
Finer gestures snap into focus without sounding clinical or forced. Layering holds strong across genres.
Imaging A-
You can literally point to where sounds originate across the stage. You can point to where sounds originate.
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

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

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