HiFiGo Binary EP321
The world's first direct-drive MEMS driver eliminates the need for a special amplifier, delivering 40kHz high-frequency resolution from any standard 3.5mm device. Its 6-driver hybrid array combines a 10mm dynamic driver with a 6mm passive radiator for fatigue-free, controlled bass, housed in lightweight 7.5-gram 3D-printed resin shells with iridescent CNC steel faceplates. This IEM is best for musicians and audiophiles seeking studio-monitor precision and natural vocal separation for critical listening or mixing.
form factor in-ear
driver type hybrid
35 Overall Score
Price R$1,436
Snapshot
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | in-ear |
| Ear Tips | XS, S, M, L |
Audio
| Driver Type | hybrid |
| Driver Size | 10 |
| Drivers | 6 |
| Freq Max | 40000 |
| Impedance | 13 |
| Codecs | HiFiGo Binary EP321 MEMS in-Ear Monitor, Direct-Drive MEMS Earphones, 3BA +2DD+1MEMS Hybrid IEM with Iridescent CNC Stainless Steel Faceplates for Musician Audiophile (3.5mm) |
Connectivity
| Wired Connector | 3.5mm |
Earbud Battery
| Charging | USB-C |
Case Battery
| Case Charging | USB-C |
Microphone
| Microphone | Yes |
vs Competition
| Spec | HiFiGo Binary EP321 | Technics EAH-AZ100 EAH-AZ100-K | Sony WF-1000XM6 | Soundcore P31i | Bose QuietComfort Ultra 896637-0020 | JBL Live Beam JBLLIVEBEAM3SILAM |
|---|---|---|---|---|---|---|
| Form Factor | in-ear | in-ear | in-ear | in-ear | in-ear | in-ear |
| Driver Type | hybrid | dynamic | dynamic | dynamic | dynamic | dynamic |
| Wireless | - | true | true | true | true | true |
| Active Noise Cancellation | - | true | true | true | true | true |
| Bluetooth Version | - | 5.3 | 5.3 | 6.0 | 5.3 | 5.3 |
| Battery Life Hours | - | 8 | 8 | 10 | 6 | 12 |
| Case Battery Hours | - | 28 | 24 | 50 | 18 | 36 |
| Water Resistance | - | IPX4 | IPX4 | IP55 | IPX4 | IP55 |
| Multipoint | - | true | true | - | true | true |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| HiFiGo Binary EP321 | 32 | 44.9 | 35 | 98.1 | 49.4 | 29.5 | 35.8 | 30.5 |
| Technics EAH-AZ100 EAH-AZ100-K Compare | 97.5 | 97.5 | 81.4 | 99.1 | 82.9 | 73.3 | 99.2 | 80.7 |
| Sony WF-1000XM6 Compare | 97.5 | 99.8 | 81.4 | 89.2 | 80 | 73.3 | 99.2 | 80.7 |
| Soundcore P31i Compare | 90.8 | 97.5 | 92 | 97.4 | 94.5 | 73.3 | 87.6 | 89.8 |
| Bose QuietComfort Ultra 896637-0020 Compare | 97.5 | 92 | 81.4 | 97 | 49.4 | 73.3 | 98.1 | 89.8 |
| JBL Live Beam JBLLIVEBEAM3SILAM Compare | 97.5 | 97.5 | 92 | 83.2 | 91.5 | 73.3 | 96.5 | 89.8 |
Price
Value & Pricing
From R$1,436
Amazon.com.br 1 offer From R$1,436
We started tracking prices for this product on Jul 5, 2026. The chart appears once we have more data.
