Side by side comparison and review of Sennheiser PXC 550 Wireless and Poly Blackwire 325. 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 PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - wired - USB, 3.5 mm jack | |
|---|---|---|---|
| Series | PXC | 300 Series | |
| Weight | 227 g | - | |
| Headband Material | - | Metal | |
| Recommended Use | Home audio, portable electronics | - |
| SOUND QUALITY | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser PXC 550 Wireless can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.2 | - | |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Device ID Profile (DIP) | - | |
| Active Noise Cancelling | Yes | - | Sennheiser PXC 550 Wireless are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | 20 - 20000 Hz | Sennheiser PXC 550 Wireless offer a larger frequency range than Poly Blackwire 325. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 110 dB | - | |
| Impedance | 490 Ohm | - | |
| Features | - | SoundGuard Technology | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | 3 | - |
| REMOTE CONTROL | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Controls | Volume | Mute, volume, answer/end |
|---|
| CABLE | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Cable Type | Headphones cable - detachable USB cable - detachable |
Headset cable - 2.13 m | |
|---|---|---|---|
| Cable Length | - | 2.13 m | |
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Features | Voice alerts | - | |
|---|---|---|---|
| Additional Functions | - | DSP |
| BATTERY AND CHARGING | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Battery Type | Headphone battery rechargeable | - | |
|---|---|---|---|
| Battery Life | 30 hour(s) | - | |
| Charging Time | 3 hour(s) | - |
| CONNECTIONS | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
|---|
| OTHERS | Sennheiser PXC 550 Wireless | Poly Blackwire 325 |
|---|
| Included Accessories | Carrying case, audio cable, in-flight plug adapter, 3.5 mm to 6.3 mm adapter, USB charge cable | - | |
|---|---|---|---|
| Software Included | CapTune | - | |
| Service & Support | - | Limited warranty - 2 years |
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