In depth comparison and review of V7 HA520-2EP and Poly Blackwire 3220. 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 | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-A | |
|---|---|---|---|
| Series | - | 3200 Series | |
| Height | 18.8 cm | 17.8 cm | |
| Width | 6.8 cm | 15.5 cm | |
| Depth | 14.8 cm | 3.2 cm | |
| Weight | 163.5 g | 64 g | Poly Blackwire 3220 are lighter than V7 HA520-2EP headphones. |
| Colour | Black | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire 3220 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | - | |
| Sensitivity | 110 dB | 90 dB | V7 HA520-2EP have higher sensitivity than Poly Blackwire 3220. |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | 28 mm | V7 HA520-2EP have a thicker diaphragm than Poly Blackwire 3220. |
| Features | - | Echo cancelation, Dynamic EQ optimised | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dBV/Pascal |
| REMOTE CONTROL | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Controls | - | Mute, volume, answer/end, hold, redial |
|---|
| CABLE | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Cable Type | Headphones cable - 1.8 m | USB-A cable | |
|---|---|---|---|
| Cable Length | 1.8 m | - |
| CONNECTIONS | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (4 PIN USB Type A) |
|---|
| OTHERS | V7 HA520-2EP | Poly Blackwire 3220 |
|---|
| Compatibility | - | Mac, Windows | |
|---|---|---|---|
| Software Certification | - | Skype Certified, Avaya Certified, Cisco Jabber Certified | |
| Supported Host Device OS | - | Windows 10, macOS, Windows 11 | |
| Compliant Standards | FCC, RoHS | - | |
| Service & Support | Limited warranty - 2 years | - |
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