Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Hifiman - Svanar | Sony - IER-Z1R |
|---|---|---|
| Impedance | 60 Ω | 40 Ω |
| Sensitivity | 107 dB | 103 dB |
| Driver count | 1 | 3 |
Between the Svanar and IER-Z1R, the Svanar comes out ahead in sensitivity, while the IER-Z1R wins on impedance / driver count. Overall, the Svanar scores 50.3 and the IER-Z1R scores 50.3 on our Mars Score.
Which should you buy?
These two are evenly matched on the broad strokes; the decision sits on which individual spec advantages weigh more for your use.
Pick the Svanar if you care most about sensitivity. The biggest gaps in its favor are sensitivity. The single most decisive one: Sensitivity — 3.88% more. 107 dB vs 103 dB.
Pick the IER-Z1R if you care most about impedance / driver count. Its strongest claims are impedance, driver count. The single most decisive one: Impedance — 20.00 Ω less. 40 vs 60.
Both ship with comparable 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: Hifiman - Svanar or Sony - IER-Z1R?
The two products are effectively tied on the current Mars Score.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 Hifiman - Svanar if…
Hifiman - Svanar has the measurable edge on sensitivity db.
Choose Sony - IER-Z1R if…
Sony - IER-Z1R has the measurable edge on impedance ohm, driver count.
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 Hifiman - Svanar wins
- ▲Sensitivity — 3.88% more. 107 dB vs 103 dB.
Why Sony - IER-Z1R wins
- ▲Impedance — 20.00 Ω less. 40 vs 60.
- ▲Driver count — 2.00 more. 3 vs 1.
Spec comparison
Drivers
| Spec | Hifiman - Svanar | Sony - IER-Z1R |
|---|---|---|
| Driver count | 1 | 3lead |
| Driver types | Dynamic (Topology Diaphragm) | 2 Dynamic + 1 Balanced Armature |
| Impedanceⓘ | 60 Ω | 40 Ωlead |
| Sensitivityⓘ | 107 dBlead | 103 dB |
Build
| Spec | Hifiman - Svanar | Sony - IER-Z1R |
|---|---|---|
| Detachable cable | true | true |
| Connector | 0.78mm 2-pinlead | MMCX |