In depth comparison and review of V7 HA520-2EP and Poly Blackwire 8225-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 8225-M |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-A | |
|---|---|---|---|
| Height | 18.8 cm | - | |
| Width | 6.8 cm | - | |
| Depth | 14.8 cm | - | |
| Weight | 163.5 g | 186 g | V7 HA520-2EP are lighter than V7 HA520-2EP headphones. |
| Colour | Black | - |
| SOUND QUALITY | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire 8225-M are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Hybrid ANC | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 110 dB | 84 dB | V7 HA520-2EP have higher sensitivity than Poly Blackwire 8225-M. |
| Impedance | 32 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | 32 mm | V7 HA520-2EP have a thicker diaphragm than Poly Blackwire 8225-M. |
| Features | - | SoundGuard DIGITAL Technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Poly Blackwire 8225-M microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -35 dBV/Pascal |
| REMOTE CONTROL | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Controls | - | Mute, volume, answer/end, Microsoft Teams button |
|---|
| CABLE | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Cable Type | Headphones cable - 1.8 m | Headset cable - 2.2 m | |
|---|---|---|---|
| Cable Length | 1.8 m | 2.2 m |
| CONNECTIONS | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headset (4 PIN USB Type A) |
|---|
| OTHERS | V7 HA520-2EP | Poly Blackwire 8225-M |
|---|
| Compliant Standards | FCC, RoHS | - | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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