Wired IEMs
Etymotic ER4SR Earphones
78Great
$349
Full review dataEtymotic ER4SR Earphones vs Hidizs MP145: which should you buy?
On aggregated review scores the Hidizs MP145 comes out ahead with an HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Hidizs MP145 - Great overall at around $207.
Wired IEMs
Hidizs MP145
84Great
$207
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Etymotic ER4SR Earphones
Sound8.5
Value6.5
Hidizs MP145
Sound8.5
Value8.0
Specifications
| Spec | Etymotic ER4SR Earphones | Hidizs MP145 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $349 | $207 |
| HearWiki score | 78 / 100 · Great | 84 / 100 · Great |
| Released | 2016 | 2023 |
| Audio | ||
| Driver | Balanced Armature (BA) | 14.5mm Ultra-large Planar Magnetic Driver |
| Driver size | - | 14.5 mm |
| Drivers per side | 1 | 1 |
| Frequency response | 20Hz-16kHz | 20Hz-40kHz |
| Impedance | 45 Ω | 30 Ω |
| Sensitivity | 98 dB/mW | 104 dB/mW |
| Wireless | ||
| Multipoint pairing | No | - |
| Battery | ||
| Wireless charging | No | - |
| Features | ||
| Active noise cancelling | No | - |
| ANC type | none | - |
| Transparency mode | No | - |
| Companion app | No | - |
| Custom EQ | No | - |
| Wear detection | No | - |
| Controls | none | - |
| Design | ||
| Weight | 20 g | 19 g |
| Detachable cable | Yes | Yes |
| USB-C | No | No |
What reviewers said
Etymotic ER4SR Earphones
The Etymotic ER4SR is a wired, single balanced-armature in-ear monitor designed for critical listening and studio use, delivering an exceptionally flat and accurate sound signature with strong midrange detail. Its deep-insertion fit provides outstanding noise isolation, though this can feel intrusive, and its minimalist design omits conveniences like controls or app support. The detachable cable and broad tip selection add practical flexibility for those who prioritize fidelity over casual listening features.
- Pro:Highly neutral and accurate sound profile
- Pro:Excellent passive noise isolation
- Pro:Detachable cable for easy replacement
- Con:Deep fit may be uncomfortable for some
- Con:Limited bass impact
- Con:Lacks inline controls or remote
Hidizs MP145
The Hidizs MP145 is a wired planar magnetic IEM featuring a large 14.5mm driver, delivering a spacious and detailed sound with impressive bass and treble extension. It offers strong technical performance and excellent value for its price, though it requires a capable source to shine due to its lower sensitivity. Overall, it's a well-regarded option for enthusiasts seeking a lively and layered listening experience.
- Pro:Spacious soundstage with excellent layering
- Pro:Detailed treble and impactful bass
- Pro:Great overall value for a planar IEM
- Con:Needs more power than typical phones provide
- Con:Low sensitivity can be demanding on weak sources
- Con:Relatively large and heavy for an IEM
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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