Side by side comparison and review of Poly Blackwire 325-M and Sennheiser HD 300 PROtect. 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-M | Sennheiser HD 300 PROtect |
|---|
| Product Type | Headset - wired - USB, 3.5 mm jack | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Series | 300 Series | - | |
| Weight | - | 297 g | |
| Headband Material | Metal | - |
| SOUND QUALITY | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 300 PROtect are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 6 - 25000 Hz | Sennheiser HD 300 PROtect offer a larger frequency range than Poly Blackwire 325-M. |
| Max Input Power | - | 500 mW | |
| Total Harmonic Distortion (THD) | - | <0.1% | |
| Sensitivity | - | 108 dB | |
| Impedance | - | 64 Ohm | |
| Features | SoundGuard Technology | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Type | Boom | - | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - |
| REMOTE CONTROL | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Controls | Mute, volume, answer/end | - |
|---|
| CABLE | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Cable Type | Headset cable - 2.13 m | Headphones cable - 1.55 m | |
|---|---|---|---|
| Cable Length | 2.13 m | 1.55 m |
| FEATURES | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Features | - | EPOS ActiveGard | |
|---|---|---|---|
| Additional Functions | DSP | - |
| CONNECTIONS | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Connector Type | USB (4 PIN USB Type A) Headphones (mini-phone 3.5 mm 4-pole) |
Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Poly Blackwire 325-M | Sennheiser HD 300 PROtect |
|---|
| Included Accessories | - | 6.3 mm (1/4") stereo adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
cs
sk
de
it
es
fr
hu
pt
ru
pl
br
ro
