Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Moondrop - Aria 2 | Sennheiser - IE 200 |
|---|---|---|
| Impedance | 32 Ω | 18 Ω |
| Sensitivity | 122 dB | 119 dB |
Between the Aria 2 and IE 200, the Aria 2 comes out ahead in sensitivity, while the IE 200 wins on impedance. Overall, the Aria 2 scores 65.4 and the IE 200 scores 62.5 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (65.4 vs 62.5). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Aria 2 if you care most about sensitivity. The biggest gaps in its favor are sensitivity. The single most decisive one: Sensitivity — 2.52% more. 122 dB vs 119 dB.
Pick the IE 200 if you care most about impedance. Its strongest claims are impedance. The single most decisive one: Impedance — 14.00 Ω less. 18 vs 32.
Both ship with comparable driver count, detachable cable, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Moondrop - Aria 2 or Sennheiser - IE 200?
Moondrop - Aria 2 leads the current Mars Score by 2.9 points.The more useful decision is the trade-off behind that result: compare impedance, sensitivity against the way you will actually use the product.
Choose Moondrop - Aria 2 if…
Moondrop - Aria 2 has the measurable edge on sensitivity db.
Choose Sennheiser - IE 200 if…
Sennheiser - IE 200 has the measurable edge on impedance ohm.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Moondrop - Aria 2 wins
- ▲Sensitivity — 2.52% more. 122 dB vs 119 dB.
Why Sennheiser - IE 200 wins
- ▲Impedance — 14.00 Ω less. 18 vs 32.
Spec comparison
Drivers
| Spec | Moondrop - Aria 2 | Sennheiser - IE 200 |
|---|---|---|
| Driver count | 1 | 1 |
| Driver types | Dynamic | Dynamic |
| Impedanceⓘ | 32 Ω | 18 Ωlead |
| Sensitivityⓘ | 122 dBlead | 119 dB |
Build
| Spec | Moondrop - Aria 2 | Sennheiser - IE 200 |
|---|---|---|
| Detachable cable | true | true |
| Connector | 0.78mm 2-pinlead | MMCX |