Side by side comparison and review of Sennheiser HD 4.30i and Poly Blackwire C725-UC. 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 HD 4.30i | Poly Blackwire C725-UC |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB | |
|---|---|---|---|
| Series | - | 700 Series | |
| Colour | Black | White | - | |
| Recommended Use | - | Computer |
| SOUND QUALITY | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wired | Wired | |
| Active Noise Cancelling | - | Yes | Poly Blackwire C725-UC are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Noise Isolating | Yes | - | Sennheiser HD 4.30i are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 20000 Hz | 20 - 20000 Hz | Sennheiser HD 4.30i offer a larger frequency range than Poly Blackwire C725-UC. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 120 dB/Vrms | - | |
| Impedance | 18 Ohm | - | |
| Diaphragm | 32 mm | - | |
| In-Cord Volume Control | Yes | Yes |
| MICROPHONE | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Form Factor | - | Headset microphone | |
|---|---|---|---|
| Type | On-cable | Boom | |
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | - | 100 - 8000 Hz | |
| Sensitivity | -44 dBV/Pascal | - |
| REMOTE CONTROL | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Controls | 3-button remote | Mute, volume, answer/end |
|---|
| CABLE | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Cable Type | Headphones cable - detachable - 1.4 m | USB cable - 2.04 m | |
|---|---|---|---|
| Cable Length | 1.4 m | 2.04 m | |
| Detachable Cable | Yes | - | |
| Plated Connector | Gold | - |
| CONNECTIONS | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | USB (4 PIN USB Type A) |
|---|
| OTHERS | Sennheiser HD 4.30i | Poly Blackwire C725-UC |
|---|
| Included Accessories | Soft bag, audio cable (1.4 m) | Carrying case | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - 2 years |
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