Between the IE 900 and Nova, the IE 900 comes out ahead in several specs, while the Nova wins on driver count and impedance. Overall, the IE 900 scores 66.4 and the Nova scores 73.9 on our Mars Score.
Which should you buy?
The Nova edges ahead on the Mars Score (66.4 vs 73.9), but the 7.5-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The IE 900 doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the Nova if you care most about driver count and impedance. Its strongest claims are driver count, impedance.
Both ship with comparable sensitivity, detachable cable, so those specs don't separate the two — focus on the differences below.
Bottom line: the Nova is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Sennheiser - IE 900 wins
- No decisive advantages.
Why Truthear - Nova wins
- ▲Driver count — 4.00 more. 5 vs 1.
- ▲Impedance — 1.00 Ω less. 15 vs 16.
Spec comparison
Drivers
| Spec | Sennheiser - IE 900 | Truthear - Nova |
|---|---|---|
| Driver count | 1 | 5lead |
| Driver types | Dynamic (X3R) | 1DD + 4BA Hybrid |
| Impedanceⓘ | 16 Ω | 15 Ωlead |
| Sensitivityⓘ | 123 dB | 123 dB |
Build
| Spec | Sennheiser - IE 900 | Truthear - Nova |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | 0.78mm 2-pinlead |
Spec-level deep dives
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