Etymotic Research ER4SR
Precision-matched balanced armature drivers within 1dB channel tolerance and 35-42 dB passive noise isolation deliver a studio-reference frequency response for analytical listening. The anodized aluminum body and detachable braided MMCX cable provide durable build quality, backed by an included signed compliance graph from the US-based tuning engineer. This wired in-ear monitor is best for audio engineers and purist listeners who prioritize absolute accuracy over enhanced bass or wireless convenience.
form factor in-ear
driver type balanced armature
34 Overall Score
Price $224
Snapshot
Pros & Cons
Pros
- Strong social proof (72nd percentile) 72nd
- Strong comfort (72nd percentile) 72nd
Cons
- Below average connectivity (14th percentile)
- Below average mic (14th percentile)
- Below average anc (32nd percentile)
- Below average build (35th percentile)
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Weight | 0.1 kg / 0.2 lbs |
Audio
| Driver Type | balanced armature |
| Freq Min | 20 |
| Freq Max | 16000 |
| Impedance | 45 |
| Sensitivity | 98 |
| Codecs | Etymotic ER4SR Studio Reference Earphone,Black |
vs Competition
| Spec | Etymotic Research ER4SR | Technics EAH-AZ100 EAH-AZ100-N | Bose QuietComfort Ultra 896637-0010 | Sony WF-1000XM6 | Google Pixel Buds Pro | EarFun Air Pro 4+ |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | balanced armature | dynamic | dynamic | dynamic | dynamic | hybrid |
| Wireless | - | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Bluetooth Version | - | 5.3 | 5.3 | 5.3 | 5.0 | 6.0 |
| Battery Life Hours | - | 8 | 6 | 8 | 11 | 12 |
| Case Battery Hours | - | 28 | 18 | 24 | 31 | 54 |
| Water Resistance | - | IPX4 | IPX4 | IPX4 | IPX4 | IP55 |
| Multipoint | - | true | true | true | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| Etymotic Research ER4SR | 31.6 | 13.9 | 34.6 | 54.3 | 47.1 | 71.6 | 13.7 | 72 |
| Technics EAH-AZ100 EAH-AZ100-N Compare | 97.3 | 97.2 | 80.7 | 99 | 81.5 | 71.6 | 99.8 | 72 |
| Bose QuietComfort Ultra 896637-0010 Compare | 97.3 | 91.2 | 80.7 | 96.7 | 47.1 | 94.2 | 97.9 | 89.6 |
| Sony WF-1000XM6 Compare | 97.3 | 99.8 | 80.7 | 88.6 | 78.4 | 71.6 | 97.9 | 80.3 |
| Google Pixel Buds Pro Compare | 97.3 | 82.6 | 80.7 | 93.3 | 84.7 | 71.6 | 95.3 | 89.6 |
| EarFun Air Pro 4+ Compare | 97.3 | 97.2 | 91.8 | 99.7 | 96.1 | 71.6 | 99.3 | 89.6 |
Price
Value & Pricing
From $224
Amazon 1 offer From $224
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
