Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Campfire Audio - Andromeda MW10 | Etymotic - ER4XR |
|---|---|---|
| Impedance | 12 Ω | 45 Ω |
| Sensitivity | 115 dB | 98 dB |
| Driver count | 5 | 1 |
Between the Andromeda MW10 and ER4XR, the Andromeda MW10 comes out ahead in impedance / sensitivity, while the ER4XR wins on several specs. Overall, the Andromeda MW10 scores 66.4 and the ER4XR scores 39.7 on our Mars Score.
Which should you buy?
The Andromeda MW10 is the clear pick on raw spec strength, leading by 26.7 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 Andromeda MW10 if you care most about impedance / sensitivity. The biggest gaps in its favor are impedance, sensitivity, driver count. The single most decisive one: Impedance — 33.00 Ω less. 12 vs 45.
The ER4XR similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable detachable cable, so those specs do not separate the two — focus on the differences below.
Bottom line: the Andromeda MW10 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: Campfire Audio - Andromeda MW10 or Etymotic - ER4XR?
Campfire Audio - Andromeda MW10 leads the current Mars Score by 26.7 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 Campfire Audio - Andromeda MW10 if…
Campfire Audio - Andromeda MW10 has the measurable edge on impedance ohm, sensitivity db, driver count.
Choose Etymotic - ER4XR if…
Etymotic - ER4XR does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
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 Campfire Audio - Andromeda MW10 wins
- ▲Impedance — 33.00 Ω less. 12 vs 45.
- ▲Sensitivity — 17.35% more. 115 dB vs 98 dB.
- ▲Driver count — 4.00 more. 5 vs 1.
Why Etymotic - ER4XR wins
- No decisive advantages.
Spec comparison
Drivers
| Spec | Campfire Audio - Andromeda MW10 | Etymotic - ER4XR |
|---|---|---|
| Driver count | 5lead | 1 |
| Driver types | 5 Balanced Armature | Balanced Armature |
| Impedanceⓘ | 12 Ωlead | 45 Ω |
| Sensitivityⓘ | 115 dBlead | 98 dB |
Build
| Spec | Campfire Audio - Andromeda MW10 | Etymotic - ER4XR |
|---|---|---|
| Detachable cable | true | true |
| Connector | MMCX | MMCX |