Wired IEMs
CrinEar Daybreak
84Outstanding
$170
Full review dataCrinEar Daybreak vs Fosi Audio IM4: which should you buy?
On aggregated review scores the CrinEar Daybreak comes out ahead with a HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: CrinEar Daybreak - Outstanding overall at around $170.
Wired IEMs
Fosi Audio IM4
72Great
$100
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
CrinEar Daybreak leads on 3 of 4 measures.
- CrinEar Daybreak
- Fosi Audio IM4
HearWiki score
84
72
Sound
8.8
7.4
Value
9.2
7.8
Price (USD)
$170
$100
Generation & platform
The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?
Same generation
Both shipped in 2025. These are the same generation of hardware - nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price.
- Daybreak2025
- IM42025
Specifications
DaybreakIM4
- Type
- Wired IEMs
- Wired IEMs
- Price (USD)
- $170
- $100
- HearWiki score
- 84
- 72
- Released
- 2025
- 2025
- Availability
- Sold new
- Sold new
- Driver
- 1DD + 2BA tribrid
- 2× 10 mm dynamic
- Driver type
- tribrid
- dynamic
- Driver configuration
- 1DD + 2BA
- -
- Driver size
- -
- 10 mm
- Drivers per side
- 3
- 2
- Impedance
- 20 Ω
- 21 Ω
- Sensitivity
- 105 dB/mW
- -
- Active noise cancelling
- No
- -
- Weight
- -
- 7 g
- Connector
- -
- 2-pin 0.78 mm
What reviewers said
CrinEar Daybreak
The CrinEar Daybreak is a well-rounded wired IEM that delivers a balanced, natural sound with a slight sub-bass emphasis, making it a strong contender around the $170 price point. It excels at reproducing acoustic music with lifelike mids and offers a non-fatiguing treble, though its overall presentation may feel too subdued for those seeking a more colored or dynamic experience. While not class-leading, it competes effectively as a reference-style option with minor trade-offs in build and technical performance.
- Pro:Natural, lifelike midrange especially for acoustic tracks
- Pro:Balanced tuning with solid bass texture and non-fatiguing treble
- Pro:Good value for the price in its category
- Con:Stock cable feels cheap and flimsy
- Con:Can sound shouty on certain recordings
- Con:Lacks excitement for listeners wanting more coloration
Fosi Audio IM4
The Fosi Audio IM4 is a wired, dual-dynamic-driver IEM around the $100 mark that leans into an open, detailed sound with a focus on upper mids and treble. It's a comfortable, well-built option that shines with vocals and acoustic material, though its tuning may feel a bit uneven for those wanting a perfectly neutral all-rounder. Overall, it offers strong technical performance and value for its price, with a few tonal quirks to consider.
- Pro:Spacious, open soundstage with good separation
- Pro:Comfortable and solid build quality
- Pro:Strong detail retrieval for the price
- Con:Tonal balance can feel uneven, especially in lower mids
- Con:Cymbal timbre can come across as metallic at times
- Con:No modular plug system included
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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