7Hz Timeless 2 VS Letshuoer S15

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

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7Hz Timeless 2 and Letshuoer S15 are in-ear monitors. 7Hz Timeless 2 costs $229 while Letshuoer S15 costs $329. Letshuoer S15 is $100 more expensive. Letshuoer S15 holds a slight 0.1-point edge in reviewer scores (6.9 vs 7). 7Hz Timeless 2 has significantly better bass with a 1.5-point edge, Letshuoer S15 has significantly better mids with a 1-point edge, Letshuoer S15 has better treble with a 0.5-point edge, Letshuoer S15 has significantly better dynamics with a 1-point edge and Letshuoer S15 has better soundstage with a 0.8-point edge.

Insights

Metric 7Hz Timeless 2 Letshuoer S15
Bass 8 6.5
Mids 6.5 7.5
Treble 6 6.5
Details 6.9 6.5
Soundstage 6 6.8
Imaging 6.9 7
Dynamics 5 6
Tonality 6.6 7
Technicalities 7.2 7.1

7Hz Timeless 2 Aggregated Review Score

Average Reviewer Scores

Jaytiss
Tim Tuned Gizaudio Axel
Jays Audio
Z-Reviews IEMRanking AI

Average Reviewer Score:

6.9

Cautiously Favorable

Letshuoer S15 Aggregated Review Score

Average Reviewer Scores

Shuwa-T Jays Audio
Jaytiss

Average Reviewer Score:

7

Generally Favorable

Reviews Comparison

7Hz Timeless 2 reviewed by Jays Audio

Jays Audio 7 Reviewer Score
A+ Tuning
A Tech
Good all-rounder set with solid tech. Good variety with the nozzles that actually changes the sound. Treble is smoother than other planars, and not much "planar timbre".

Jays Audio original ranking

Jays Audio Youtube Channel
YouTube video thumbnail

Letshuoer S15 reviewed by Jays Audio

Jays Audio 6.5 Reviewer Score
A Tuning
A Tech
Neutral and laid back tuning. Great layering and separation and resolution. Great treble extension and air without being too sharp and light like other planar iems. Bass is also not light and floaty, and doesn't feel like planar bass - not slamming, but tight and well-textured. Vocals are laid back, but not too pushed back although it's not the most extended and powerful, but works very-well as a neutral set. Nice and open staging, and is the direct upgrade to the Hexa and Sonus. Very good safe all-rounder.

Jays Audio original ranking

Jays Audio Youtube Channel
YouTube video thumbnail

7Hz Timeless 2 reviewed by Jaytiss

Jaytiss 5.5 Reviewer Score
C Tuning
C+ Tech
It's fine, but it's 230 dollars.

Jaytiss original ranking

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

Letshuoer S15 reviewed by Jaytiss

2025-07-16
Jaytiss 8 Reviewer Score
A- Tuning
A- Tech
Nice Clarity, good detail. I feel it should have got more love.

Jaytiss original ranking

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

7Hz Timeless 2 (more reviews)

7Hz Timeless 2 reviewed by Z-Reviews

Z-Reviews 8.5 * score normalized
check links for more info:

Z-Reviews original ranking

Z-Reviews Youtube Channel
YouTube video thumbnail

7Hz Timeless 2 reviewed by Tim Tuned

Tim Tuned 6.5 Reviewer Score
B+ Tuning
A+ Tech
A good v-shape treble can be a bit too much

Tim Tuned original ranking

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

7Hz Timeless 2 reviewed by Gizaudio Axel

Gizaudio Axel 6 Reviewer Score
B Tuning
A- Tech
Sounds is identical to the Timeless OG. Clean, impactful bass, great detail, fast transients. Upper mids are a bit intense, bright treble, planar timbre.

Gizaudio Axel original ranking

Gizaudio Axel Youtube Channel

7Hz Timeless 2 reviewed by IEMRanking AI

2025-07-23
IEMRanking AI 8.1 Reviewer Score
A+ Tuning
S- Tech

The 7Hz Timeless II updates its predecessor with a 14.5mm planar magnetic driver featuring a dual-sided silver alloy diaphragm and N52 magnets, offering improved responsiveness and reduced "planar timbre" compared to the original . Its standout feature is the four interchangeable nozzles, allowing tonal adjustments—though the bullet-shaped variants suffer from condensation issues and noticeably reduce treble clarity . Comfort is decent for medium-to-large ears, but the aluminum shells may challenge smaller anatomies, and isolation remains average despite a secure fit .

Tonally, the Timeless II leans neutral with a sub-bass lift, delivering fast, textured lows that avoid bleeding into the mids . Midrange clarity is strong but can edge into harshness with upper-mid-forward tracks, while treble extends well without excessive sibilance . Technically, it excels in imaging precision and soundstage width, though depth and height feel constrained next to hybrids like the Simgot ET142 .

Letshuoer S15 (more reviews)

Letshuoer S15 reviewed by Shuwa-T

Shuwa-T 6.6 Reviewer Score
B+ Tuning
B+ Tech
Warmer tuned planar with less emphasis on the lower treble; easier to listen to for longer periods Still plagued by planar timbre, overall clarity takes a hit from warmer signature, slight subbass rolloff to my ears

Shuwa-T original ranking

Shuwa-T Website

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

7Hz Timeless 2 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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Letshuoer S15 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

No user reviews yet. Be the first one who writes a review!

7Hz Timeless 2 Gaming Score

Gaming Score & Grade

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

Gaming Score

7

Gaming Grade

A-

Letshuoer S15 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+

7Hz Timeless 2 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.

Average Technical Grade

A-
  • Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
Bass A+
Excellent bass response - powerful yet controlled. Deep extension with authoritative slam while maintaining clarity.
Mids B+
Good midrange presence with solid clarity. Vocals are clear and instruments have reasonable texture and body.
Treble B
Good treble response - clear and detailed without fatigue. Well-extended with proper air and sparkle.
Dynamics C+
Decent dynamic performance. Good macro-contrast but micro-dynamics could be more nuanced. Satisfactory impact.
Soundstage B
Good soundstage with proper width and depth. Instruments have clear positioning with reasonable front/back placement.
Gaming A-
Good fundamental spatial awareness for most gaming scenarios. Handles basic positioning well but may lack nuance in complex situations.

Letshuoer S15 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • Pleasing tonal balance with good technical control. Minor quirks present but not distracting. Demonstrates decent genre versatility.

Average Technical Grade

A-
  • Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
Bass B+
Good bass foundation with decent impact. Maintains acceptable control while providing satisfying thump in most tracks.
Mids A
Excellent midrange with natural timbre and great detail retrieval. Vocals are forward and emotive with lifelike instrument reproduction.
Treble B+
Good treble response - clear and detailed without fatigue. Well-extended with proper air and sparkle.
Dynamics B
Good dynamic expression with solid impact. Handles volume contrasts well while maintaining good transient snap.
Soundstage B+
Good soundstage with proper width and depth. Instruments have clear positioning with reasonable front/back placement.
Details B+
Good resolution with clear articulation of nuances. Reveals recording nuances and maintains clarity in complex passages.
Imaging A-
Excellent imaging: precise and stable placement. Instruments occupy specific points in space with tangible positions.
Gaming B+
Respectable environmental presentation favors atmosphere over precision. Detects obvious directional cues while conveying game world ambiance. Value-to-cost may not be optimal for gaming-focused users.

7Hz Timeless 2 User Reviews

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Letshuoer S15 User Reviews

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