In depth comparison and review of EPOS I SENNHEISER C20 and Poly Blackwire 3320-M. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Product Type | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | Headset - wired - USB-C | |
|---|---|---|---|
| Series | C-series | Blackwire 3300 series | |
| Height | 20 cm | 17.8 cm | |
| Width | 16.5 cm | 15.5 cm | |
| Depth | 5.8 cm | 3.2 cm | |
| Weight | 200 g | 130 g | Poly Blackwire 3320-M are lighter than EPOS I SENNHEISER C20 headphones. |
| Colour | Black | Black | |
| Earpad Material | - | Foam | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Active Noise Cancelling | - | Yes | Poly Blackwire 3320-M are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | - | 20 - 20000 Hz | |
| Total Harmonic Distortion (THD) | 3% | - | |
| Sensitivity | - | 116 dB | |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | - | 118 dB | |
| Diaphragm | - | 32 mm | |
| Features | EPOS BrainAdapt Technology | Dynamic EQ optimised | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Type | Boom | Boom | |
|---|---|---|---|
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Battery Type | Headset battery rechargeable | - | |
|---|---|---|---|
| Standby Time | 300 hours | - | |
| Charging Time | 2 hour(s) | - |
| CONNECTIONS | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Connector Type | - | USB (24 pin USB-C) |
|---|
| OTHERS | EPOS I SENNHEISER C20 | Poly Blackwire 3320-M |
|---|
| Included Accessories | Carrying case, charging cable, BTD 800 USB dongle | - | |
|---|---|---|---|
| Compatibility | - | Mac, Windows | |
| Software Certification | - | Certified for Microsoft Teams | |
| Supported Host Device OS | - | Windows 10, macOS | |
| Service & Support | Limited warranty - 2 years | - |
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