LetShuoer EJ07M and TangZu Tian Peng use 1DD+2BA+4EST and 1DD+6BA+1BC driver setups respectively. LetShuoer EJ07M costs $670 while TangZu Tian Peng costs $629. LetShuoer EJ07M is $41 more expensive. Both score 7.5 from reviewers. LetShuoer EJ07M has significantly better mids with a 1.5-point edge, LetShuoer EJ07M has significantly better dynamics with a 1-point edge and TangZu Tian Peng has slightly better soundstage with a 0.3-point edge.
Insights
Metric | LetShuoer EJ07M | TangZu Tian Peng |
---|---|---|
Bass | 7.5 | 7.4 |
Mids | 7.5 | 6 |
Treble | 6.2 | 6 |
Details | 6.8 | 7.4 |
Soundstage | 7.3 | 7.5 |
Imaging | 6.8 | 7.4 |
Dynamics | 6 | 5 |
Tonality | 7.3 | 7.2 |
Technicalities | 6.9 | 7.7 |
LetShuoer EJ07M Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.5Generally Favorable
TangZu Tian Peng Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.4Generally Favorable
Reviews Comparison
LetShuoer EJ07M reviewed by Jays Audio
Jays Audio Youtube Channel
TangZu Tian Peng reviewed by Jays Audio
The Tanchjim Fission presents a neutral, balanced, and clean sound signature that is also described as smooth and full. It offers a very natural and laid-back listening experience, making it a strong option for those seeking a safe, non-fatiguing tuning. The technical performance is solid for its price, with good detail retrieval and instrument separation, though it isn't the most dynamic or sparkly set available.
Tip selection is crucial, with recommendations for the Tri Clear or Final E tips to open up the sound, while the Spinfit CP155 can add a touch more bass. The included tuning switches are largely seen as a gimmick; only the middle silver setting is recommended, as the others introduce a significant sub-bass roll-off. The Fission excels with genres like rock, indie, acoustics, and classical at moderate volumes, but its lack of sub-bass rumble and extension makes it a weak choice for hip-hop, EDM, or rap.
Its greatest strength is its value proposition, as it is essentially a cheaper version of the Tanchjim Origin, sharing the same driver and sound profile for a lower cost. This makes competitors like the Moondrop Kato seem less relevant. However, when compared to other all-rounders like the Juzear 4U or Simgot EW300, the Fission faces stiff competition. The EW300, in particular, offers more bass, tuning variety, and similar technicalities for half the price, making the Fission a tougher sell unless its specific brand of smooth, neutral tonality is exactly what you're after.
Jays Audio Youtube Channel
LetShuoer EJ07M reviewed by Jaytiss
Jaytiss Youtube Channel
TangZu Tian Peng reviewed by Jaytiss
2025-08-09Jaytiss Youtube Channel
LetShuoer EJ07M (more reviews)
LetShuoer EJ07M reviewed by Audionotions
LetShuoer EJ07M reviewed by Super* Review
LetShuoer EJ07M reviewed by Shuwa-T
LetShuoer EJ07M reviewed by Precogvision
Precogvision Youtube Channel
TangZu Tian Peng (more reviews)
TangZu Tian Peng reviewed by IEMRanking AI

The Tangzu Tian Peng offers a V-shaped sound profile that leans towards reference while maintaining musicality, with bass quality being notably source-dependent - it requires amplification to achieve its full physical impact potential. Mids take a step back but remain clean and detailed, while treble presentation varies significantly with eartip choice, becoming bright with Noble tips but more controlled with Azla or Divinus alternatives. Its technical performance shines through strong detail retrieval and decent separation, though the soundstage extends only slightly beyond the head in a circular presentation.
This IEM demands careful system matching as its tonality shifts substantially with different sources, presenting warmer with DAPs like Hiby R6 Pro Max or ONIX xm10 ltd but potentially cold with reference gear. The bone conduction driver contributes to its unique texturing and clarity enhancement according to manufacturer claims, though the overall signature remains heavily influenced by source pairings. Comfort proves a strength with its lightweight resin build enabling extended listening sessions.
LetShuoer EJ07M Details
Driver Configuration: 1DD+2BA+4EST
Tuning Type: Harman Neutral
Brand: Letshuoer Top Letshuoer IEMs
Price (Msrp): $670
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TangZu Tian Peng Details
Driver Configuration: 1DD+6BA+1BC
Tuning Type: V-Shaped
Brand: TangZu Top TangZu IEMs
Price (Msrp): $629
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LetShuoer EJ07M User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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TangZu Tian Peng User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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LetShuoer EJ07M Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
6.5Gaming Grade
B+TangZu Tian Peng Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
7Gaming Grade
A-LetShuoer EJ07M 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
B+- Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
TangZu Tian Peng 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- Good technical performance. Clear separation and decent detail retrieval across various tracks. Soundstage shows reasonable width and depth.
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