In depth comparison and review of JVC TINYPHONES HA-KD7 and Poly Blackwire 3320. 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 | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB | |
|---|---|---|---|
| Series | - | 3300 Series | |
| Weight | 110 g | 130 g | JVC TINYPHONES HA-KD7 are lighter than JVC TINYPHONES HA-KD7 headphones. |
| Protection | - | Hearing protection | |
| Design | Kids | - | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | Yes | |
| Connectivity Technology | Wired | Wired | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 15 - 23000 Hz | 20 - 20000 Hz | JVC TINYPHONES HA-KD7 offer a larger frequency range than Poly Blackwire 3320. |
| Max Input Power | 200 mW | - | |
| Sensitivity | 85 dB/mW | 94 dB | Poly Blackwire 3320 have higher sensitivity than JVC TINYPHONES HA-KD7. |
| Impedance | - | 32 Ohm | |
| Diaphragm | 30 mm | 32 mm | Poly Blackwire 3320 have a thicker diaphragm than JVC TINYPHONES HA-KD7. |
| Magnet Material | Ferrite | - | |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Type | - | Boom | |
|---|---|---|---|
| Noise Cancelling | - | Yes | Poly Blackwire 3320 microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -38 dB |
| REMOTE CONTROL | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Controls | - | Mute, volume, answer/end |
|---|
| CABLE | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Cable Type | Headphones cable - 0.8 m | Headset cable | |
|---|---|---|---|
| Cable Length | 0.8 m | - | |
| Plated Connector | Nickel | - |
| CONNECTIONS | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (4 PIN USB Type A) |
|---|
| OTHERS | JVC TINYPHONES HA-KD7 | Poly Blackwire 3320 |
|---|
| Included Accessories | Decorative stickers | - | |
|---|---|---|---|
| Software Certification | - | Certified for Microsoft Teams | |
| Service & Support | - | Limited warranty - 2 years |
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