FATfreq x Effect Audio: Quantum VS Mangird XENNS UP

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

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FATfreq x Effect Audio: Quantum and Mangird XENNS UP are in-ear monitors. FATfreq x Effect Audio: Quantum costs $770 while Mangird XENNS UP costs $699. FATfreq x Effect Audio: Quantum is $71 more expensive. FATfreq x Effect Audio: Quantum holds a slight 0.3-point edge in reviewer scores (7 vs 6.6). FATfreq x Effect Audio: Quantum has better bass with a 0.8-point edge, Mangird XENNS UP has significantly better mids with a 1.2-point edge, Mangird XENNS UP has better treble with a 0.7-point edge, FATfreq x Effect Audio: Quantum has significantly better dynamics with a 4-point edge, Mangird XENNS UP has slightly better soundstage with a 0.3-point edge and Mangird XENNS UP has significantly better imaging with a 1-point edge.

Insights

Metric FATfreq x Effect Audio: Quantum Mangird XENNS UP
Bass 7.5 6.8
Mids 5 6.2
Treble 5 5.7
Details 6 6
Soundstage 6.5 6.8
Imaging 5.5 6.5
Dynamics 9 5
Tonality 7 6.7
Technicalities 7.5 6.6

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

Mangird XENNS UP Aggregated Review Score

Average Reviewer Scores

Nymz Tim Tuned
Shuwa-T Jaytiss Crin
Kois Archive Jays Audio Bad Guy Good Audio Head-Fi.org

Average Reviewer Score:

6.6

Cautiously Favorable

Reviews Comparison

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

Mangird XENNS UP reviewed by Kois Archive

Kois Archive 7.8 Reviewer Score
S- Tuning
S Tech
Rating: A+ | Value: ⭐ | Gaming: 🎮🎮 | Comfort: 9 warm and nice bass texture bit too much midbass

Kois Archive original ranking

Kois Archive Youtube Channel

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-
YouTube video thumbnail

Mangird XENNS UP reviewed by Jaytiss

Jaytiss 6 Reviewer Score
C+ Tuning
C- Tech
Highs on this set are very offputting.

Jaytiss original ranking

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

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

Mangird XENNS UP reviewed by Jays Audio

Jays Audio 7.5 Reviewer Score
S- Tuning
A+ Tech
Fast and clean bass but still rumbly and punchy. Beryllium DD baby. Well-seperated mids, and vocals still pop and aren't buried like other bass sets. Can use more treble extension (fixed with AZLA sedna tips).

Jays Audio original ranking

Jays Audio Youtube Channel

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-

Mangird XENNS UP reviewed by Shuwa-T

Shuwa-T 6.8 Reviewer Score
B+ Tuning
A- Tech
Balanced sounding with good technicalities A warmer, fuller-sounding, bassier Mangird Tea

Shuwa-T original ranking

Shuwa-T Website

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

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

Mangird XENNS UP reviewed by Head-Fi.org

Head-Fi.org 7.8 * score rescaled + normalized
7 community members have rated the Mangird XENNS UP at an average of 4.2/5 on Head-Fi. Overall sentiment: Very Positive.

URL to full Review

Head-Fi.org original ranking

FATfreq x Effect Audio: Quantum (more reviews)

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
YouTube video thumbnail

Mangird XENNS UP (more reviews)

Mangird XENNS UP reviewed by Bad Guy Good Audio

Bad Guy Good Audio 7.5 Reviewer Score
A+ Tuning
B Tech
Guilty pleasures..love the slam, treble still fine. Beryllium baby!!

Bad Guy Good Audio original ranking

Bad Guy Good Audio Youtube Channel
Bass: A- Mids: A- Treble: A-

Mangird XENNS UP reviewed by Crin

Crin 6 Reviewer Score
B+ Tuning
B Tech
check links for more info:

Crin original ranking

Crin Youtube Channel

Mangird XENNS UP reviewed by Nymz

Nymz 5.2 Reviewer Score
C+ Tuning
C+ Tech
The party starter. Very very warm, but fun. Different from anything else. Treble and mids somewhat ok even after all the warmth. Mid-bass is very good.

Nymz original ranking

Nymz Website

Bass: C+ Mids: C+ Treble: C+ Details: C+ Imaging: B

Mangird XENNS UP reviewed by Tim Tuned

Tim Tuned 5 Reviewer Score
C+ Tuning
A- Tech
Bass focus without over coloring. Smooth listen Low energy, just okay note definition

Tim Tuned original ranking

Tim Tuned Youtube Channel
Bass: A- Mids: A- Treble: A-

FATfreq x Effect Audio: Quantum User Review Score

Average User Scores

Average User Score: n/a

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Mangird XENNS UP 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 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+

Mangird XENNS UP Gaming Score

Gaming Score & Grade

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

Gaming Score

6.1

Gaming Grade

B

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

Mangird XENNS UP Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • The tuning leans easygoing, yet occasional unevenness nudges it away from greatness. A bit of EQ polish can smooth things nicely.

Average Technical Grade

B+
  • Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.
Bass B+
You get a lively bass response that balances energy with discipline. It balances punch with respectable control.
Mids B
The mids are articulate and well-balanced, lending body to instruments. Instrument layering remains stable.
Treble B-
Expect a polite treble presentation that balances presence with restraint. Percussion carries a pleasant sparkle.
Dynamics C+
Dynamics feel competent, bringing energy without the finest detail. It carries energy without sounding aggressive.
Soundstage B+
The presentation supplies a believable venue outline where each instrument owns its pocket of space. The stage opens up nicely for live cuts.
Details B
Good resolution with clear articulation of nuances that keeps complex passages intelligible. Micro-details pop without sounding forced.
Imaging B+
Depth cues step forward, giving performances a dimensional presence. Front-to-back cues become more immersive.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues. Bad value-to-cost for gaming purpose - not recommended

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