Between the AONIC 5 and IER-Z1R, the AONIC 5 comes out ahead in sensitivity and impedance, while the IER-Z1R wins on several specs. Overall, the AONIC 5 scores 66.4 and the IER-Z1R scores 50.3 on our Mars Score.
Which should you buy?
The AONIC 5 is the clear pick on raw spec strength, leading by 16.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the AONIC 5 if you care most about sensitivity and impedance. The biggest gaps in its favor are sensitivity, impedance.
The IER-Z1R similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable driver count, detachable cable, so those specs don't separate the two — focus on the differences below.
Bottom line: the AONIC 5 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Shure - AONIC 5 wins
- ▲Sensitivity — 15.53% more. 119 dB vs 103 dB.
- ▲Impedance — 4.00 Ω less. 36 vs 40.
Why Sony - IER-Z1R wins
- No decisive advantages.
Spec comparison
Drivers
| Spec | Shure - AONIC 5 | Sony - IER-Z1R |
|---|---|---|
| Driver count | 3 | 3 |
| Driver types | Triple Balanced Armature | 2 Dynamic + 1 Balanced Armature |
| Impedanceⓘ | 36 Ωlead | 40 Ω |
| Sensitivityⓘ | 119 dBlead | 103 dB |
Build
| Spec | Shure - AONIC 5 | Sony - IER-Z1R |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | MMCX |
Spec-level deep dives
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