Side by side comparison and review of Sennheiser HD 350BT and Poly Blackwire C3220 (3200 Series). Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - USB-C | |
|---|---|---|---|
| Series | - | 3200 Series | |
| Height | - | 17.8 cm | |
| Width | - | 15.5 cm | |
| Depth | - | 3.2 cm | |
| Weight | 238 g | 64 g | Poly Blackwire C3220 (3200 Series) are lighter than Sennheiser HD 350BT headphones. |
| Colour | Black | White | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | - | Portable electronics, computer |
| SOUND QUALITY | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Foldable | Yes | - | Sennheiser HD 350BT can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.0 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX, apt-X LL | - | |
| Active Noise Cancelling | - | Yes | Poly Blackwire C3220 (3200 Series) are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Sensitivity | - | 90 dB | |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | 108 dB | - | |
| Diaphragm | - | 28 mm | |
| Features | - | Digital signal processing, echo cancelation, Dynamic EQ optimised | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Beamforming | Omni-directional | |
| Frequency Response | 80 - 6000 Hz | 100 - 10000 Hz | Poly Blackwire C3220 (3200 Series) offer a larger microphone frequency range than Sennheiser HD 350BT. |
| Sensitivity | - | -38 dBV/Pascal | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Controls | - | Mute, volume, answer/end, hold, redial |
|---|
| CABLE | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Cable Type | USB-C charge cable - detachable | USB-C cable |
|---|
| BATTERY AND CHARGING | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | - | |
|---|---|---|---|
| Battery Capacity | 300 mAh | - | |
| Battery Life | 30 hours | - | |
| Charging Time | 2 hours | - |
| CONNECTIONS | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Connector Type | - | USB (USB Type-C) |
|---|
| OTHERS | Sennheiser HD 350BT | Poly Blackwire C3220 (3200 Series) |
|---|
| Included Accessories | - | Carrying case | |
|---|---|---|---|
| Compatibility | - | Mac, Windows | |
| Software Certification | - | Skype Certified, Avaya Certified, Cisco Jabber Certified | |
| Supported Host Device OS | - | Windows 10, macOS, Windows 11 | |
| Service & Support | Limited warranty - 2 years | - |
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