In depth comparison and review of V7 HA520-2EP 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 | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-C | |
|---|---|---|---|
| Series | - | Blackwire 3300 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 | 130 g | Poly Blackwire 3320-M are lighter than V7 HA520-2EP headphones. |
| Colour | Black | Black | |
| Earpad Material | - | Foam | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| 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 | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 110 dB | 116 dB | Poly Blackwire 3320-M have higher sensitivity than V7 HA520-2EP. |
| Impedance | 32 Ohm | 32 Ohm | |
| Max Sound Pressure | - | 118 dB | |
| Diaphragm | 40 mm | 32 mm | V7 HA520-2EP have a thicker diaphragm than Poly Blackwire 3320-M. |
| Features | - | Dynamic EQ optimised | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Cable Type | Headphones cable - 1.8 m | - | |
|---|---|---|---|
| Cable Length | 1.8 m | - |
| CONNECTIONS | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (24 pin USB-C) |
|---|
| OTHERS | V7 HA520-2EP | Poly Blackwire 3320-M |
|---|
| Compatibility | - | Mac, Windows | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Supported Host Device OS | - | Windows 10, macOS | |
| Compliant Standards | FCC, RoHS | - | |
| Service & Support | Limited warranty - 2 years | - |
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