Between the Blessing 3 and IER-M9, the Blessing 3 comes out ahead in sensitivity and impedance, while the IER-M9 wins on several specs. Overall, the Blessing 3 scores 68.3 and the IER-M9 scores 54.5 on our Mars Score.
Which should you buy?
The Blessing 3 is the clear pick on raw spec strength, leading by 13.8 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 Blessing 3 if you care most about sensitivity and impedance. The biggest gaps in its favor are sensitivity, impedance.
The IER-M9 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 Blessing 3 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Moondrop - Blessing 3 wins
- ▲Sensitivity — 13.59% more. 117 dB vs 103 dB.
- ▲Impedance — 3.00 Ω less. 15 vs 18.
Why Sony - IER-M9 wins
- No decisive advantages.
Spec comparison
Drivers
| Spec | Moondrop - Blessing 3 | Sony - IER-M9 |
|---|---|---|
| Driver count | 5 | 5 |
| Driver types | 1DD + 4BA Hybrid | 5 Balanced Armature |
| Impedanceⓘ | 15 Ωlead | 18 Ω |
| Sensitivityⓘ | 117 dBlead | 103 dB |
Build
| Spec | Moondrop - Blessing 3 | Sony - IER-M9 |
|---|---|---|
| Detachable cable | true | true |
| Connector | 2-pinlead | MMCX |
Spec-level deep dives
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