Wired IEMs
Moondrop Aria
82Great
$116
Full review dataMoondrop Aria vs TRN Earphone 4: which should you buy?
On aggregated review scores the Moondrop Aria comes out ahead with an HearWiki score of 82. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Moondrop Aria - Great overall at around $116.
Wired IEMs
TRN Earphone 4
68Good
$87
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Moondrop Aria
Sound8.5
Value8.0
TRN Earphone 4
Sound7.0
Value6.5
Specifications
| Spec | Moondrop Aria | TRN Earphone 4 |
|---|---|---|
| Type | Wired IEMs | Wired IEMs |
| Price (USD) | $116 | $87 |
| HearWiki score | 82 / 100 · Great | 68 / 100 · Good |
| Released | 2021 | 2019 |
| Audio | ||
| Driver | 10 mm LCP liquid crystal polymer dynamic driver | hybrid |
| Driver size | 10 mm | 10 mm |
| Drivers per side | 1 | 4 |
| Frequency response | 5Hz-36kHz | 20Hz-40kHz |
| Impedance | 32 Ω | 22 Ω |
| Sensitivity | 122 dB/mW | 105 dB/mW |
| Wireless | ||
| Bluetooth | none | none |
| Codecs | - | LDAC, SBC, AAC |
| Multipoint pairing | No | No |
| Battery | ||
| Wireless charging | - | No |
| Features | ||
| Active noise cancelling | No | - |
| ANC type | - | none |
| Transparency mode | - | No |
| Companion app | No | No |
| Custom EQ | No | No |
| Wear detection | No | No |
| Controls | none | - |
| Design | ||
| Weight | 12 g | 7 g |
| USB-C | No | No |
| Model code | - | TRN MT4 |
What reviewers said
Moondrop Aria
The Moondrop Aria is a wired in-ear monitor that delivers a balanced, neutral-leaning sound with a touch of warmth and extra bass punch, making it a strong performer for its price. It's easy to drive from most devices thanks to its high sensitivity and 32-ohm impedance, and it offers solid build quality with a removable 2-pin cable. However, it lacks features like noise cancellation and controls, and its isolation is only average, so it's not ideal for noisy commutes.
- Pro:Excellent tonal balance with natural midrange timbre
- Pro:High sensitivity makes it easy to drive from phones
- Pro:Solid build quality with removable 2-pin cable
- Con:Average isolation, not suited for loud environments
- Con:Cable is prone to tangling and transmits some noise
- Con:No inline controls or microphone
TRN Earphone 4
The TRN MT4 is a hybrid in-ear monitor that pairs two Knowles balanced armatures with two dynamic drivers, delivering a clean, spacious, and highly detailed sound signature. It prioritizes technical performance—such as strong detail retrieval—over a warm or bass-heavy tuning, making it a solid choice for analytical listening. With a comfortable fit and lightweight build, it offers good value around its price point, though it lacks wireless features and app support.
- Pro:Excellent detail retrieval and clarity
- Pro:Spacious, clean soundstage
- Pro:Comfortable and lightweight fit
- Con:Not ideal for bass-heavy or warm sound preferences
- Con:No Bluetooth or app support
- Con:Limited control options
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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