Simgot Supermix 4 VS Letshuoer S12

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

Home Ranking Compare IEMs

Simgot Supermix 4 and Letshuoer S12 use 1DD+1BA+1Planar+1PZT and 1Planar driver setups respectively. Simgot Supermix 4 costs $150 while Letshuoer S12 costs $150. Letshuoer S12 is $0 more expensive. Simgot Supermix 4 holds a slight 0.4-point edge in reviewer scores (6.9 vs 6.5). User ratings place Simgot Supermix 4 at 6 and Letshuoer S12 at 6.8. Simgot Supermix 4 has better bass with a 0.5-point edge, Simgot Supermix 4 has better mids with a 0.7-point edge, Simgot Supermix 4 has significantly better treble with a 1.2-point edge, Simgot Supermix 4 has significantly better dynamics with a 5-point edge and Letshuoer S12 has slightly better soundstage with a 0.3-point edge.

Insights

Metric Simgot Supermix 4 Letshuoer S12
Bass 8 7.5
Mids 7 6.3
Treble 6.5 5.3
Details 6.9 7
Soundstage 6 6.3
Imaging 6.9 6.5
Dynamics 6 1
Tonality 6.7 6.1
Technicalities 7 5.9

Simgot Supermix 4 Aggregated Review Score

Average Reviewer Scores

Gizaudio Axel
Yifang Tim Tuned Fresh Reviews Web Search
Kois Archive Jays Audio Jaytiss
Audio Amigo Head-Fi.org

Average Reviewer Score:

6.9

Cautiously Favorable

Letshuoer S12 Aggregated Review Score

Average Reviewer Scores

Jaytiss
Audionotions
Shuwa-T Fresh Reviews Jays Audio Tim Tuned
Z-Reviews
Super* Review Head-Fi.org

Average Reviewer Score:

6.5

Mixed to Positive

Reviews Comparison

Simgot Supermix 4 reviewed by Jays Audio

Jays Audio 7 Reviewer Score
A Tuning
A+ Tech
Endgame Harman, one of the smoothest IEMs I've heard with Tangzu Sancai tips (regular). Some units might be hotter in the treble/pzt timbre

Jays Audio original ranking

Jays Audio Youtube Channel
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Price: $149.99

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Letshuoer S12 reviewed by Jays Audio

Jays Audio 6 Reviewer Score
A Tuning
A- Tech
The most refined S12 to date. Smoothest treble out of all the S12, and very little Planar timbre while keeping up the great tech and detail.

Jays Audio original ranking

Jays Audio Youtube Channel
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Price: $149

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Simgot Supermix 4 reviewed by Jaytiss

Jaytiss 7 Reviewer Score
B Tuning
B Tech
If this works for you, it's a sonic treasure. My unit has issues.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: B Treble: B Dynamics: B Soundstage: B
YouTube video thumbnail

Letshuoer S12 reviewed by Jaytiss

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
YouTube video thumbnail

Simgot Supermix 4 reviewed by Tim Tuned

Tim Tuned 6.5 Reviewer Score
B+ Tuning
A+ Tech
Harman with more treble energy Can be too spicy

Tim Tuned original ranking

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

Letshuoer S12 reviewed by Tim Tuned

Tim Tuned 6 Reviewer Score
B Tuning
A+ Tech
Planar with the most "wow" factor. Spacious heead stage Treble can be too much

Tim Tuned original ranking

Tim Tuned Youtube Channel
Bass: A+ Mids: A- Treble: A-
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Simgot Supermix 4 reviewed by Fresh Reviews

Fresh Reviews 6* * The score of this reviewer influences only the Gaming Score
check links for more info:

Fresh Reviews original ranking

Fresh Reviews Youtube Channel
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Letshuoer S12 reviewed by Fresh Reviews

Fresh Reviews 6.5* * The score of this reviewer influences only the Gaming Score
Great package and some titles arguably A-

Fresh Reviews original ranking

Fresh Reviews Youtube Channel
YouTube video thumbnail

Simgot Supermix 4 reviewed by Head-Fi.org

Head-Fi.org 8.1 * score rescaled + normalized
50 community members have rated the Simgot Supermix 4 at an average of 4.3/5 on Head-Fi. Overall sentiment: Excellent.

URL to full Review

Head-Fi.org original ranking

Letshuoer S12 reviewed by Head-Fi.org

Head-Fi.org 8.4 * score rescaled + normalized
22 community members have rated the Letshuoer S12 at an average of 4.5/5 on Head-Fi. Overall sentiment: Outstanding.

URL to full Review

Head-Fi.org original ranking

Simgot Supermix 4 (more reviews)

Simgot Supermix 4 reviewed by Audio Amigo

Audio Amigo 8 * score rescaled + normalized
A slightly more V-shaped version of the Truthear Nova. A bit more bass, a bit more treble. Not as vocal focused. Some of the best technical performance at $150. Good accessories. Shells are more compact than the Nova.

Audio Amigo original ranking

Audio Amigo Youtube Channel

Simgot Supermix 4 reviewed by Kois Archive

Kois Archive 7 Reviewer Score
A+ Tuning
A+ Tech
Rating: A- | Value: ⭐⭐ | Gaming: 🎮🎮 | Comfort: 10 great harman set treble could be smoother

Kois Archive original ranking

Kois Archive Youtube Channel

Simgot Supermix 4 reviewed by Yifang

Yifang 6.5 Reviewer Score
B+ Tuning
B+ Tech
check links for more info:

Yifang original ranking

Yifang Youtube Channel

Simgot Supermix 4 reviewed by Gizaudio Axel

Gizaudio Axel 5.5 Reviewer Score
B Tuning
B+ Tech
Harman tuning. Soft bass, bright sound, metallic timbre.

Gizaudio Axel original ranking

Gizaudio Axel Youtube Channel

Simgot Supermix 4 reviewed by Web Search

uses AI-Search to turn user, reddit and head-fi reviews into clear, concise summaries.
Web Search 6.4 Reviewer Score
B+ Tuning
B Tech

The Simgot Supermix 4 packs a quadbrid driver configuration (1DD+1BA+1 Planar+1 PZT) into a comfortable resin shell. Its sound follows a U-shaped signature aligned with the Harman IE 2019 target, emphasizing sub-bass rumble and crisp upper-midrange clarity while keeping lower mids slightly recessed. The bass is deep and textured, though mid-bass punch can feel soft, and vocals sometimes edge into shoutiness at higher volumes.

Treble delivery is a standout, with the planar and PZT drivers offering snappy articulation and air without harsh sibilance. Technical performance is strong for the price, featuring a wide soundstage and precise imaging that excels in gaming scenarios. However, low impedance makes it source-sensitive, and accessories feel minimal with only one set of tips included.

While not class-leading in resolution, the Supermix 4 delivers cohesive tonality across its diverse drivers, making it a versatile choice for bass-forward genres and competitive gaming. Its slight warmth and holographic staging compensate for minor midrange thinning, offering solid value despite fierce competition.

Letshuoer S12 (more reviews)

Letshuoer S12 reviewed by Super* Review

Super* Review 8* * score rescaled + normalized
check links for more info:

Super* Review original ranking

Super* Review Youtube Channel
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Letshuoer S12 reviewed by Z-Reviews

Z-Reviews 7.2 * score rescaled + normalized
check links for more info:

Z-Reviews original ranking

Z-Reviews Youtube Channel
YouTube video thumbnail

Letshuoer S12 reviewed by Shuwa-T

Shuwa-T 6.8 Reviewer Score
A- Tuning
B+ Tech
check links for more info:

Shuwa-T original ranking

Shuwa-T Website

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

Letshuoer S12 reviewed by Audionotions

Audionotions 5.5 Reviewer Score
Very energetic. Very detailed. Very bright. Noticeable recession in mids - it is V-shaped after all. Planar timbre is quite noticeable and can sometimes make this sound unnatural.

Audionotions original ranking

Website (Audionotions)

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Price: $149

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Price: $126

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Simgot Supermix 4 User Review Score

Average User Scores

Average User Score:

Based on 1 user reviews

6

Mixed to Positive

Letshuoer S12 User Review Score

Average User Scores

Average User Score:

Based on 1 user reviews

6.8

Cautiously Favorable

Simgot Supermix 4 Gaming Score

Gaming Score & Grade

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

Gaming Score

7.1

Gaming Grade

A-

Letshuoer S12 Gaming Score

Gaming Score & Grade

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

Gaming Score

6.2

Gaming Grade

B

Simgot Supermix 4 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-
  • It manages detail and layering well enough, even if the stage feels only moderately sized. You get a clear sense of left and right, if not depth.
Bass A+
You hear powerful yet disciplined low-end slam that extends effortlessly. It marries sub-bass depth with great texture.
Mids A-
Expect lifelike vocals and instruments with impressive nuance and realism. You can easily follow harmonies and backups.
Treble B+
The top end is engaging and airy, yet never overbearing. Brass and strings feel energetic.
Dynamics B
You get confident dynamics that track both macro swings and rhythmic drive. There's life in every crescendo.
Soundstage B
Lateral spread stretches comfortably while front/back cues start to feel convincing. You can trace front-to-back movement.
Gaming A-
Good fundamental spatial awareness for most gaming scenarios. Handles basic positioning well but may lack nuance in complex situations.

Letshuoer S12 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B
  • Tonality is generally agreeable, though a few bumps remind you of its limits. Certain tracks spotlight its tonal quirks.

Average Technical Grade

B-
  • It offers a competent showing, maintaining cohesion on straightforward arrangements. Complex passages start to challenge it, but never derail the show.
Bass A
The bass hits with conviction, offering both punch and clarity. It reaches low with confidence and control.
Mids B
The region sounds composed and expressive, giving vocals a natural spotlight. It keeps vocals front and center nicely.
Treble C+
Treble is decent, offering acceptable extension without harshness. It balances presence with a touch of restraint.
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.
Details A-
Low-level information blossoms, presenting a rich tapestry of articulate sound. Analytical listeners will be delighted.
Imaging B+
Instrument boundaries feel well carved, avoiding smear or drift. Instrument outlines feel well-defined.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues.

Simgot Supermix 4 User Reviews

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M Makavelian
6

Better tuned options at this price range.

Pros
Responsiveness to EQ
Cons
Typical harman IEM tuning - thin bodied and honky sounding.

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Letshuoer S12 User Reviews

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W wpzdm
6.8

Best Planar IEM I've heard

Pros
Very impressive tech at its price
Cons
A bit artificial

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