Moondrop S8 VS FATfreq x Effect Audio: Quantum

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

Moondrop S8 and FATfreq x Effect Audio: Quantum are in-ear monitors. Moondrop S8 costs $700 while FATfreq x Effect Audio: Quantum costs $770. FATfreq x Effect Audio: Quantum is $70 more expensive. Moondrop S8 holds a clear 0.6-point edge in reviewer scores (7.6 vs 7). FATfreq x Effect Audio: Quantum has better bass with a 0.9-point edge, Moondrop S8 has significantly better mids with a 2.5-point edge, Moondrop S8 has significantly better treble with a 2.8-point edge, FATfreq x Effect Audio: Quantum has significantly better dynamics with a 3.3-point edge, Moondrop S8 has significantly better soundstage with a 1-point edge, Moondrop S8 has significantly better details with a 2-point edge and Moondrop S8 has significantly better imaging with a 2.2-point edge.

Insights

Metric Moondrop S8 FATfreq x Effect Audio: Quantum
Bass 6.6 7.5
Mids 7.5 5
Treble 7.8 5
Details 8 6
Soundstage 7.5 6.5
Imaging 7.7 5.5
Dynamics 5.7 9
Tonality 7.3 7
Technicalities 7.5 7.5

Moondrop S8 Aggregated Review Score

Average Reviewer Scores

Bad Guy Good Audio Shuwa-T Audionotions Gizaudio Axel Crin Jaytiss Smirk Audio Precogvision Tim Tuned
Super* Review

Average Reviewer Score:

7.6

Strongly Favorable


FATfreq x Effect Audio: Quantum Aggregated Review Score

Average Reviewer Scores

Shuwa-T
Audio Amigo
Kois Archive Jaytiss Jays Audio Head-Fi.org

Average Reviewer Score:

7

Cautiously Favorable


Reviews Comparison

Moondrop S8 reviewed by Shuwa-T

Shuwa-T 7.8 Reviewer Score
A- Tuning
A+ Tech
Comment: Technically proficient. Clarity and tuning well done BA timbre

Shuwa-T original ranking

Shuwa-T Website

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

FATfreq x Effect Audio: Quantum reviewed by Shuwa-T

Shuwa-T 5.7 Reviewer Score
B- Tuning
B- Tech
I struggle with this, perhaps it was insertion depth but that unconventional iem shape should never have been greenlit Average bass, thin midrange, unbearably sibilant treble

Shuwa-T original ranking

Shuwa-T Website

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

Moondrop S8 reviewed by Jaytiss

Jaytiss 7.3 Reviewer Score
B Tuning
A- Tech
Special set.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: B Treble: A- Dynamics: C+ Soundstage: A-

FATfreq x Effect Audio: Quantum reviewed by Jaytiss

Jaytiss 7.8 Reviewer Score
B+ Tuning
B Tech
I don't want to like, but I love.

Jaytiss original ranking

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

Moondrop S8 (more reviews)

Moondrop S8 reviewed by Super* Review

Super* Review 9* * score rescaled + normalized
Youtube Video Summary

Striking design meets smart ergonomics: a crystal-clear acrylic shell that looks glass-polished, with noticeably cleaner clarity than Blessing 2/Dusk. The fit is more contoured and effortless, thanks to slightly narrower nozzles; isolation is immense because it’s an unvented all-BA set, which also means some ear pressure for the uninitiated. Cable, case, and tips mirror the Blessing 2 bundle—serviceable if not premium.

Tuning sits in lean-neutral with a sub-bass lift: not a basshead set, but sub-bass presence is satisfying. As with most BA bass, it won’t move air like a DD; versus Blessing 2 Dusk the low end is considered weaker, yet it outclasses sets like the Dunu SA6 for punch and definition. The midrange delivers excellent detail and micro-contrast, tracking closely to Dusk’s slimmer mids rather than the warmer original B2. The showstopper is the treble—clean, airy, and refined with zero grit, pairing with wider-than-B2 staging (a “wraparound” feel toward ~180°) for standout imaging, separation, and layering. Among BA references, only benchmarks like 64 Audio U12t or Campfire Ara come to mind as peers for bass quality and overall finesse.

At $700, the value question hinges on priorities: dynamic-driver bass lovers may lean Monarch/Clairvoyance, but for those chasing mid/treble purity and effortless technicalities, S8 is special. Gorgeous build, secure fit, and a treble performance that feels best-in-class coalesce into an easy recommendation—ultimately earning a full 5/5 in this take.


Super* Review original ranking

Super* Review Youtube Channel

Moondrop S8 reviewed by Bad Guy Good Audio

Bad Guy Good Audio 7.9 Reviewer Score
A+ Tuning
A- Tech
Great detail,relax tuning upgrade of "A8" only a slight upgrade to the previous A8
Youtube Video Summary

Moondrop S8 makes a strong first impression: a gorgeous build, clean shells, and a presentation that feels premium without pretending to be leather-clad luxury. The design keeps it simple—no tuning switches—and packs three different types of balanced armatures, hinting at a deliberate, all-BA execution. Moondrop’s track record is front of mind here: Kanas Pro, KXXS, and the A8 (the S8’s predecessor) stay on the “constant recs” list, while the Blessing line isn’t spared criticism despite the hype.

The included cable looks copper-like, is soft and supple, and uses a right-angle plug with Moondrop branding on the Y-split—though there’s no chin slider. Past Moondrop cable quirks get a nod, but this one appears solid on first inspection. Accessory fitment and finish are treated with care (no scratching those caps), and anticipation centers on the FR graph: if it doesn’t “graph like a disaster,” S8 is poised to be a winner. For now, it’s all about the music, the look, and a tuning that—if it tracks—could push this set straight into the recommendation zone.

Bass: B Mids: A+ Treble: A+

URL to full Review

Bad Guy Good Audio original ranking

Bad Guy Good Audio Youtube Channel

Moondrop S8 reviewed by Audionotions

Audionotions 7.5 Reviewer Score
Very resolving and well tuned. Note weight leans thin. First IEM that I can say I definitely hear the BA timbre. Could use more down low. Pressure build is uncomfortable.

Audionotions original ranking

Website (Audionotions)

Moondrop S8 reviewed by Gizaudio Axel

Gizaudio Axel 7.5 Reviewer Score
A- Tuning
A+ Tech
Smooth, detailed, and balanced tuning. Harman-like sound with plenty of detail. BA bass.

Gizaudio Axel original ranking

Gizaudio Axel Youtube Channel

Moondrop S8 reviewed by Crin

Crin 7.5 Reviewer Score
S- Tuning
A Tech
More faithful to the Harman target compared to the A8, with a smoother bass response.

Crin original ranking

Crin Youtube Channel

Moondrop S8 reviewed by Smirk Audio

Smirk Audio 7.1 Reviewer Score
A- Tuning
A- Tech
Very resolving with a sweet, pleasant timbre. Good mids and treble. Average bass. Upper-mids may be shouty to some.

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

Bass: B Mids: A+ Treble: A Dynamics: B Details: A Imaging: A

Moondrop S8 reviewed by Precogvision

Precogvision 7.1 Reviewer Score
A- Tuning
A- Tech
Excellent treble extension and detail retrieval.

Precogvision original ranking

Precogvision Youtube Channel
Bass: B Mids: A+ Treble: A+ Dynamics: B Details: A+ Imaging: A-

Moondrop S8 reviewed by Tim Tuned

Tim Tuned 7 Reviewer Score
A- Tuning
A+ Tech
Smooth engaging harman signature with fun bass BA timbre
Youtube Video Summary

The Moondrop S8 mirrors the tonal balance of the Blessing 2 Dusk—similar bass level, natural mids, solid upper-mid presence, and extended treble—but distinguishes itself in execution. Bass is notably smoother; where Dusk can feel a bit forced/dry on bass-heavy tracks, S8 stays composed and fluid. Midrange carries a touch of classic BA timbre—notes sound lighter and a bit weightless versus Dusk’s more grounded “natural weight”—yet resolution and clarity remain excellent. Up top, energy is a step higher, giving female vocals a fuller, more effortless presence.

What sells the S8 is how cohesive and refined the whole package feels: transitions are seamless, detail retrieval is clean, and the tuning reads as a polished, more elegant take on the Dusk’s recipe. It’s effectively the Dusk, elevated—smoother bass, airier sparkle, and a more effortless overall presentation—making it a standout choice for listeners who prioritize clarity and treble openness without sacrificing balance. Among Moondrop’s lineup in this guide, S8 comes across as the most complete and the most compelling upgrade for a refined, reference-leaning sound.

Bass: A+ Mids: A+ Treble: A+

Tim Tuned original ranking

Tim Tuned Youtube Channel

FATfreq x Effect Audio: Quantum (more reviews)

FATfreq x Effect Audio: Quantum reviewed by Kois Archive

Kois Archive 7.8 Reviewer Score
S- Tuning
S Tech
Rating: A+ | Value: ⭐ | Gaming: 🎮🎮🎮 | Comfort: 4 very technical. wide. well tuned planar grainy treble due to the air

Kois Archive original ranking

Kois Archive Youtube Channel

FATfreq x Effect Audio: Quantum reviewed by Jays Audio

Jays Audio 7 Reviewer Score
A- Tuning
S Tech
Bright and full sound, very detailed, sparkly, airy, tons of treble extenstion... but it gets fatiguing with the stock filters. Blue filter has the best balance but still doesn't scale too well. 300 mesh filter goes hard tho - check modded ranking at bottom.

Jays Audio original ranking

Jays Audio Youtube Channel

FATfreq x Effect Audio: Quantum reviewed by Audio Amigo

Audio Amigo 6 * score rescaled + normalized
An interesting sort of Science Project IEM. FatFreq tried to extract as much Sub-bass power and texture while making an airy, detailed planar that isn't fatiguing. They succeeded, and with the Super Stage NOAH modules, this is the most open and wide sounding single Planar I've ever heard. Wish it was cheaper and didn't come with the Ares S II cable.

Audio Amigo original ranking

Audio Amigo Youtube Channel

FATfreq x Effect Audio: Quantum reviewed by Head-Fi.org

Head-Fi.org 7.5 * score rescaled + normalized
2 community members have rated the FATfreq x Effect Audio: Quantum at an average of 4.0/5 on Head-Fi. Overall sentiment: Very Positive.

URL to full Review

Head-Fi.org original ranking

Moondrop S8 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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FATfreq x Effect Audio: Quantum User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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Moondrop S8 Gaming Score

Gaming Score & Grade

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

Gaming Score

6.9

Gaming Grade

B+

FATfreq x Effect Audio: Quantum Gaming Score

Gaming Score & Grade

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

Gaming Score

6.8

Gaming Grade

B+

Moondrop S8 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • It balances warmth and clarity well, showing only minor quirks along the way. Timbre feels believable with most instruments.

Average Technical Grade

A
  • You get a controlled, composed performance, marrying decent clarity with a still-modest sense of space. A safe technical performer for the price bracket.
Bass B+
Low end hits with respectable impact while staying reasonably tidy. You get a healthy sense of rhythm.
Mids A
Midrange performance is excellent, with natural timbre and great detail. Vocals feel lifelike and full-bodied.
Treble A
Treble performance is excellent—airy, extended, and beautifully controlled. It reveals subtle studio ambiance.
Dynamics B-
You get reliable macrodynamics, with micro shifts that remain only adequate. A reliable performer for most tracks.
Soundstage A
You hear both the breadth and the altitude of the mix, anchored by accurate positional cues. Immersion improves across genres.
Details A+
The tiniest inflections pop into view as if spotlit within the mix. Low-level details feel magnified yet natural.
Imaging A
Each element locks into a steady coordinate even as the mix grows dense. Imaging holds even during busy segments.
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

FATfreq x Effect Audio: Quantum Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • Tuning lands in a pleasing sweet spot with mostly coherent frequency integration. Tonality stays consistent from track to track.

Average Technical Grade

A
  • You get a controlled, composed performance, marrying decent clarity with a still-modest sense of space. A safe technical performer for the price bracket.
Bass A
Expect a commanding bass response that reaches deep without clouding the mix. There's both slam and nuance in equal measure.
Mids C+
The mids are solid and dependable, though not especially remarkable. Vocals stay reasonably grounded in the mix.
Treble C+
Highs come through with reasonable clarity while staying mostly smooth. Sibilance is mostly controlled.
Dynamics S
This is reference-grade dynamic performance with breathtaking realism. It mirrors live-music intensity perfectly.
Soundstage B+
A satisfying balance of width and depth yields a stage that feels organized and engaging. Imaging lines up with the intended mix.
Details B
Finer gestures snap into focus without sounding clinical or forced. Layering holds strong across genres.
Imaging B-
A stable phantom center appears, lending vocals a consistent anchor. It maintains a coherent phantom center.
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

Moondrop S8 User Reviews

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FATfreq x Effect Audio: Quantum User Reviews

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