In depth comparison and review of Poly Blackwire 8225-M and Sennheiser HD 458BT. 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 | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Product Type | Headset - wired - USB-A | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 186 g | 238 g | Poly Blackwire 8225-M are lighter than Poly Blackwire 8225-M headphones. |
| Colour | - | Black | |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Adjustable Headband | Yes | - | |
| Foldable | - | Yes | Sennheiser HD 458BT 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 | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Hybrid ANC | - | |
| Sound Output Mode | - | Stereo | |
| Frequency Response | 20 - 20000 Hz | 18 - 22000 Hz | Sennheiser HD 458BT offer a larger frequency range than Poly Blackwire 8225-M. |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Sensitivity | 84 dB | - | |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | - | 108 dB | |
| Diaphragm | 32 mm | - | |
| Features | SoundGuard DIGITAL Technology | Voice control |
| MICROPHONE | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | Boom | - | |
| Noise Cancelling | Yes | - | Poly Blackwire 8225-M microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 80 - 6000 Hz | Poly Blackwire 8225-M offer a larger microphone frequency range than Sennheiser HD 458BT. |
| Sensitivity | -35 dBV/Pascal | - |
| REMOTE CONTROL | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Controls | Mute, volume, answer/end, Microsoft Teams button | - |
|---|
| CABLE | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Cable Type | Headset cable - 2.2 m | Audio cable - detachable USB-C charge cable - detachable |
|
|---|---|---|---|
| Cable Length | 2.2 m | - |
| BATTERY AND CHARGING | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 30 hours | |
| Charging Time | - | 2 hours |
| CONNECTIONS | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Connector Type | Headset (4 PIN USB Type A) | - |
|---|
| OTHERS | Poly Blackwire 8225-M | Sennheiser HD 458BT |
|---|
| Included Accessories | - | Carrying case |
|---|
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