Side by side comparison and review of Sennheiser HD 400S and Poly EncorePro 720D. 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 400S | Poly EncorePro 720D |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - wired - USB-A | |
|---|---|---|---|
| Series | - | EncorePro 700 Series | |
| Weight | 217 g | 78 g | Poly EncorePro 720D are lighter than Sennheiser HD 400S headphones. |
| Colour | Black | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Headphones Form Factor | Full size | On-ear binaural | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 400S can be folded. |
| Connectivity Technology | Wired | Wired | |
| Noise Isolating | Yes | - | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 18 - 20000 Hz | - | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Impedance | 18 Ohm | - | |
| Max Sound Pressure | 120 dB | - | |
| Diaphragm | - | 28 mm | |
| Features | - | SoundGuard Technology |
| MICROPHONE | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Noise Cancelling | - | Yes | Poly EncorePro 720D microphone can cancel out ambient noise. |
| Noise Cancelling Technology | - | Passive noise cancellation (PNC) | |
| Frequency Response | 100 - 10000 Hz | 100 - 6800 Hz | Sennheiser HD 400S offer a larger microphone frequency range than Poly EncorePro 720D. |
| REMOTE CONTROL | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Controls | Answer/end, play/pause, next/previous track | - |
|---|
| CABLE | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Cable Type | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | - | |
|---|---|---|---|
| Cable Length | 1.4 m | 89 cm | |
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Features | - | Quick Disconnect, 290° rotatable microphone, boom mic length 120-145 mm |
|---|
| CONNECTIONS | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (USB Type-A) |
|---|
| OTHERS | Sennheiser HD 400S | Poly EncorePro 720D |
|---|
| TAA Compliant | - | Yes | |
|---|---|---|---|
| Service & Support | Limited warranty - 2 years | - |
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