In depth comparison and review of V7 HA520-2EP and Poly Blackwire 3325. 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 3325 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | - | 3300 Series | |
| Height | 18.8 cm | 18.6 cm | |
| Width | 6.8 cm | 21.6 cm | |
| Depth | 14.8 cm | 5.6 cm | |
| Weight | 163.5 g | 130 g | Poly Blackwire 3325 are lighter than V7 HA520-2EP headphones. |
| Colour | Black | - | |
| Earpad Material | - | Leatherette | |
| Protection | - | Hearing protection |
| SOUND QUALITY | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 110 dB | 94 dB | V7 HA520-2EP have higher sensitivity than Poly Blackwire 3325. |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | 32 mm | V7 HA520-2EP have a thicker diaphragm than Poly Blackwire 3325. |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Poly Blackwire 3325 microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Cable Type | Headphones cable - 1.8 m | Headset cable | |
|---|---|---|---|
| Cable Length | 1.8 m | - |
| CONNECTIONS | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
|---|
| OTHERS | V7 HA520-2EP | Poly Blackwire 3325 |
|---|
| Included Accessories | - | Carrying pouch | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Compliant Standards | FCC, RoHS | - | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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