Side by side comparison and review of Poly Blackwire C725-UC and Sennheiser HMD 300 PRO. 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 C725-UC | Sennheiser HMD 300 PRO |
|---|
| Product Type | Headset - wired - USB | Headset - wired | |
|---|---|---|---|
| Series | 700 Series | - | |
| Weight | - | 319 g | |
| Recommended Use | Computer | - |
| SOUND QUALITY | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Foldable | - | Yes | Sennheiser HMD 300 PRO can be folded. |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | SoundGuard | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 60 - 25000 Hz | Sennheiser HMD 300 PRO offer a larger frequency range than Poly Blackwire C725-UC. |
| Max Input Power | - | 500 mW | |
| Total Harmonic Distortion (THD) | - | 0.1% | |
| Sensitivity | - | 108 dB | |
| Impedance | - | 64 Ohm | |
| Max Sound Pressure | - | 123 dB | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Technology | - | Dynamic | |
| Microphone Operation Mode | - | Hypercardioid | |
| Frequency Response | 100 - 8000 Hz | 80 - 16000 Hz | Sennheiser HMD 300 PRO offer a larger microphone frequency range than Poly Blackwire C725-UC. |
| Sensitivity | - | 0.4 mV/Pascal | |
| Impedance | - | 300 Ohm |
| REMOTE CONTROL | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Cable Type | USB cable - 2.04 m | - | |
|---|---|---|---|
| Cable Length | 2.04 m | - |
| FEATURES | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Features | - | EPOS ActiveGard |
|---|
| CONNECTIONS | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Connector Type | USB (4 PIN USB Type A) | - |
|---|
| OTHERS | Poly Blackwire C725-UC | Sennheiser HMD 300 PRO |
|---|
| Included Accessories | Carrying case | Wind screen | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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