Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | FiiO - FH19 | KZ - ZAR |
|---|---|---|
| Impedance | 12 Ω | 26 Ω |
| Sensitivity | 112 dB | 108 dB |
| Driver count | 10 | 8 |
Between the FH19 and ZAR, the FH19 comes out ahead in impedance / sensitivity, while the ZAR wins on several specs. Overall, the FH19 scores 72.9 and the ZAR 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 / sensitivity. The biggest gaps in its favor are impedance, sensitivity, driver count. The single most decisive one: Impedance — 14.00 Ω less. 12 vs 26.
The ZAR similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
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 KZ - ZAR?
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, sensitivity db, driver count.
Choose KZ - ZAR if…
KZ - ZAR does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 — 14.00 Ω less. 12 vs 26.
- ▲Sensitivity — 3.70% more. 112 dB vs 108 dB.
- ▲Driver count — 2.00 more. 10 vs 8.
Why KZ - ZAR wins
- No decisive advantages.
Spec comparison
Drivers
| Spec | FiiO - FH19 | KZ - ZAR |
|---|---|---|
| Driver count | 10lead | 8 |
| Driver types | 1DD + 8BA + 1BC Hybrid | 1DD + 7BA Hybrid |
| Impedanceⓘ | 12 Ωlead | 26 Ω |
| Sensitivityⓘ | 112 dBlead | 108 dB |
Build
| Spec | FiiO - FH19 | KZ - ZAR |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | 0.78mm 2-pinlead |