Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | FiiO - FH19 | Moondrop - Aria 2 |
|---|---|---|
| Impedance | 12 Ω | 32 Ω |
| Driver count | 10 | 1 |
| Sensitivity | 112 dB | 122 dB |
Between the FH19 and Aria 2, the FH19 comes out ahead in impedance / driver count, while the Aria 2 wins on sensitivity. Overall, the FH19 scores 72.9 and the Aria 2 scores 65.4 on our Mars Score.
Which should you buy?
The FH19 edges ahead on the Mars Score (72.9 vs 65.4), but the 7.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the FH19 if you care most about impedance / driver count. The biggest gaps in its favor are impedance, driver count. The single most decisive one: Impedance — 20.00 Ω less. 12 vs 32.
Pick the Aria 2 if you care most about sensitivity. Its strongest claims are sensitivity. The single most decisive one: Sensitivity — 8.93% more. 122 dB vs 112 dB.
Both ship with comparable detachable cable, so those specs do not separate the two — focus on the differences below.
Bottom line: the FH19 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: FiiO - FH19 or Moondrop - Aria 2?
FiiO - FH19 leads the current Mars Score by 7.5 points.The more useful decision is the trade-off behind that result: compare driver count, impedance, sensitivity against the way you will actually use the product.
Choose FiiO - FH19 if…
FiiO - FH19 has the measurable edge on impedance ohm, driver count.
Choose Moondrop - Aria 2 if…
Moondrop - Aria 2 has the measurable edge on sensitivity db.
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 FiiO - FH19 wins
- ▲Impedance — 20.00 Ω less. 12 vs 32.
- ▲Driver count — 9.00 more. 10 vs 1.
Why Moondrop - Aria 2 wins
- ▲Sensitivity — 8.93% more. 122 dB vs 112 dB.
Spec comparison
Drivers
| Spec | FiiO - FH19 | Moondrop - Aria 2 |
|---|---|---|
| Driver count | 10lead | 1 |
| Driver types | 1DD + 8BA + 1BC Hybrid | Dynamic |
| Impedanceⓘ | 12 Ωlead | 32 Ω |
| Sensitivityⓘ | 112 dB | 122 dBlead |
Build
| Spec | FiiO - FH19 | Moondrop - Aria 2 |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | 0.78mm 2-pinlead |