Side by side comparison and review of Poly Blackwire 325 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 325 | Sennheiser HMD 300 PRO |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headset - wired | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 319 g | |
| Headband Material | Metal | - |
| SOUND QUALITY | Poly Blackwire 325 | 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 | Sennheiser HMD 300 PRO are equipped with active noice cancellation. |
| 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 325. |
| Max Input Power | - | 500 mW | |
| Total Harmonic Distortion (THD) | - | 0.1% | |
| Sensitivity | - | 108 dB | |
| Impedance | - | 64 Ohm | |
| Max Sound Pressure | - | 123 dB | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Type | Boom | Boom | |
|---|---|---|---|
| Microphone Technology | - | Dynamic | |
| Microphone Operation Mode | - | Hypercardioid | |
| Frequency Response | 100 - 10000 Hz | 80 - 16000 Hz | Sennheiser HMD 300 PRO offer a larger microphone frequency range than Poly Blackwire 325. |
| Sensitivity | - | 0.4 mV/Pascal | |
| Impedance | - | 300 Ohm |
| REMOTE CONTROL | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Cable Type | Headset cable - 2.13 m | - | |
|---|---|---|---|
| Cable Length | 2.13 m | - |
| FEATURES | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Features | - | EPOS ActiveGard | |
|---|---|---|---|
| Additional Functions | DSP | - |
| CONNECTIONS | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
- |
|---|
| OTHERS | Poly Blackwire 325 | Sennheiser HMD 300 PRO |
|---|
| Included Accessories | - | Wind screen | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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