Between the IE 600 and AONIC 3, the IE 600 comes out ahead in impedance / sensitivity, while the AONIC 3 wins on several specs. Overall, the IE 600 scores 61.5 and the AONIC 3 scores 56.6 on our Mars Score.
Which should you buy?
The IE 600 edges ahead on the Mars Score (61.5 vs 56.6), but the 4.9-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the IE 600 if you care most about impedance / sensitivity. The biggest gaps in its favor are impedance, sensitivity.
The AONIC 3 similarly does not 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 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.
Why Sennheiser - IE 600 wins
- ▲Impedance — 12.00 Ω less. 18 vs 30.
- ▲Sensitivity — 4.42% more. 118 dB vs 113 dB.
Why Shure - AONIC 3 wins
- No decisive advantages.
Spec comparison
Drivers
| Spec | Sennheiser - IE 600 | Shure - AONIC 3 |
|---|---|---|
| Driver count | 1 | 1 |
| Driver types | Dynamic (TrueResponse) | Single Balanced Armature |
| Impedanceⓘ | 18 Ωlead | 30 Ω |
| Sensitivityⓘ | 118 dBlead | 113 dB |
Build
| Spec | Sennheiser - IE 600 | Shure - AONIC 3 |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | MMCX |
Spec-level deep dives
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