Fiio FD 15 VS Letshuoer S12

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

Fiio FD 15 and Letshuoer S12 are in-ear monitors. Fiio FD 15 costs $150 while Letshuoer S12 costs $150. Fiio FD 15 holds a decisive 3.5-point edge in reviewer scores (7.3 vs 3.8). Letshuoer S12 carries a user score of 6.8. Fiio FD 15 has significantly better mids with a 2-point edge, Fiio FD 15 has significantly better treble with a 4-point edge, Fiio FD 15 has significantly better dynamics with a 4-point edge and Fiio FD 15 has significantly better soundstage with a 1-point edge.

Insights

Jaytiss Score
Fiio FD 15
7.3 /10
Jaytiss Score
Letshuoer S12
3.8 /10
Score gap: 3.5
Metric Fiio FD 15 Letshuoer S12
Mids 7 5
Treble 6 2
Soundstage 7 6
Dynamics 5 1
Tonality 6.3 3.8
Technicalities 6 2
Take these comparisons with a grain of salt—we don't have enough Fiio FD 15 and Letshuoer S12 reviews saved yet to provide an unbiased result.

Jaytiss Reviews Comparison

Fiio FD 15 reviewed by

Jaytiss 7.3 Reviewer Score
B Tuning
B Tech
Balanced and even. Solid set that is mid focused.

Jaytiss original ranking

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

Letshuoer S12 reviewed by

Jaytiss 3.8 Reviewer Score
D+ Tuning
E+ Tech
I think the s12 is fine, the pro and z12 don't add too much value

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: C+ Treble: E+ Dynamics: E- Soundstage: B
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Fiio FD 15 Details

Driver Configuration:

Tuning Type: n/a

Brand: FiiO Top FiiO IEMs

Price (Msrp): $150

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Letshuoer S12 Details

Fiio FD 15 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B
  • A mostly enjoyable signature keeps things listenable despite a handful of quirks. It handles most playlists without major complaints.

Average Technical Grade

B
  • An honest, middle-of-the-road performance preserves structure without chasing micro-detail. It's respectable for everyday listening sessions.
Mids A-
Midrange performance is excellent, with natural timbre and great detail. Vocals feel lifelike and full-bodied.
Treble B
Treble is articulate and clean, adding excitement without harshness. It adds sparkle without harshness.
Dynamics C+
Dynamic performance is decent, delivering respectable macro swings with limited nuance. There's a fair amount of macrodynamic swing.
Soundstage A-
Excellent spatial presentation that is wide, deep, and tall with precise instrument placement. Width, depth, and height all feel expanded.

Letshuoer S12 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

D+
  • It struggles with balance, producing a lumpy response that rarely sounds coherent. Genre hopping highlights glaring inconsistencies.

Average Technical Grade

E+
  • Instrument separation collapses instantly, burying nuances and leaving everything in a gray blur. Layered arrangements collapse into a messy haze.
Mids C+
It presents a stable midrange foundation suitable for everyday listening. Clarity is serviceable without standing out.
Treble E+
Expect a dark-tilted treble that keeps excitement in check. Sibilants are dull, but so is everything else.
Dynamics E-
Expect limp dynamics that rob music of its natural rises and falls. Swells in orchestral tracks vanish.
Soundstage B
Good soundstage with proper width and depth, placing instruments in clearly defined positions. Instruments sit in their own lanes.

Fiio FD 15 User Reviews

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Letshuoer S12 User Reviews

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wpzdm
6.8

Best Planar IEM I've heard

Pros
Very impressive tech at its price
Cons
A bit artificial

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