Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | 64 Audio - U12t | Moondrop - Aria 2 |
|---|---|---|
| Impedance | 12 Ω | 32 Ω |
| Driver count | 12 | 1 |
| Sensitivity | 115 dB | 122 dB |
Between the U12t and Aria 2, the U12t comes out ahead in impedance / driver count, while the Aria 2 wins on sensitivity. Overall, the U12t scores 79.3 and the Aria 2 scores 65.4 on our Mars Score.
Which should you buy?
The U12t is the clear pick on raw spec strength, leading by 13.9 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 U12t if you care most about impedance / driver count. The biggest gaps in its favor are impedance, driver count. The single most decisive one: Impedance — 20.00 Ω less. 12 vs 32.
Pick the Aria 2 if you care most about sensitivity. Its strongest claims are sensitivity. The single most decisive one: Sensitivity — 6.09% more. 122 dB vs 115 dB.
Both ship with comparable detachable cable, so those specs do not separate the two — focus on the differences below.
Bottom line: the U12t is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: 64 Audio - U12t or Moondrop - Aria 2?
64 Audio - U12t leads the current Mars Score by 13.9 points.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 64 Audio - U12t if…
64 Audio - U12t has the measurable edge on impedance ohm, driver count.
Choose Moondrop - Aria 2 if…
Moondrop - Aria 2 has the measurable edge on sensitivity db.
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 64 Audio - U12t wins
- ▲Impedance — 20.00 Ω less. 12 vs 32.
- ▲Driver count — 11.00 more. 12 vs 1.
Why Moondrop - Aria 2 wins
- ▲Sensitivity — 6.09% more. 122 dB vs 115 dB.
Spec comparison
Drivers
| Spec | 64 Audio - U12t | Moondrop - Aria 2 |
|---|---|---|
| Driver count | 12lead | 1 |
| Driver types | 12 Balanced Armature | Dynamic |
| Impedanceⓘ | 12 Ωlead | 32 Ω |
| Sensitivityⓘ | 115 dB | 122 dBlead |
Build
| Spec | 64 Audio - U12t | Moondrop - Aria 2 |
|---|---|---|
| Detachable cable | true | true |
| Connector | 2-pin | 0.78mm 2-pinlead |