Side by side comparison and review of Poly Blackwire 3325 and Sennheiser HD 450BT. 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 | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Series | 3300 Series | - | |
| Height | 18.6 cm | - | |
| Width | 21.6 cm | - | |
| Depth | 5.6 cm | - | |
| Weight | 130 g | 238 g | Poly Blackwire 3325 are lighter than Poly Blackwire 3325 headphones. |
| Colour | - | Black | White | |
| Earpad Material | Leatherette | - | |
| Protection | Hearing protection | - |
| SOUND QUALITY | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Adjustable Headband | Yes | - | |
| Foldable | - | Yes | Sennheiser HD 450BT can be folded. |
| Connectivity Technology | Wired | Wireless | |
| 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 | Sennheiser HD 450BT are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 18 - 22000 Hz | Sennheiser HD 450BT offer a larger frequency range than Poly Blackwire 3325. |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Sensitivity | 94 dB | - | |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | - | 108 dB | |
| Diaphragm | 32 mm | - | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Microphone Operation Mode | - | Beamforming | |
| Noise Cancelling | Yes | - | Poly Blackwire 3325 microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 80 - 6000 Hz | Poly Blackwire 3325 offer a larger microphone frequency range than Sennheiser HD 450BT. |
| Sensitivity | -38 dB | - | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Cable Type | Headset cable | Audio cable - detachable USB-C charge cable - detachable |
|---|
| BATTERY AND CHARGING | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 30 hours | |
| Charging Time | - | 2 hours |
| CONNECTIONS | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Connector Type | USB (4 PIN USB Type A) Headset (mini-phone 3.5mm) |
- |
|---|
| OTHERS | Poly Blackwire 3325 | Sennheiser HD 450BT |
|---|
| Included Accessories | Carrying pouch | Carrying case | |
|---|---|---|---|
| Software Certification | Certified for Microsoft Teams | - | |
| Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |
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