In depth comparison and review of Sennheiser HD 4.40 and Poly EncorePro 720D. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - wired - USB-A | |
|---|---|---|---|
| Series | - | EncorePro 700 Series | |
| Weight | - | 78 g | |
| Colour | - | Black | |
| Earpad Material | - | Artificial leather |
| SOUND QUALITY | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Headphones Form Factor | Full size | On-ear binaural | |
|---|---|---|---|
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 18 - 22000 Hz | - | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 113 dB | - | |
| Impedance | 18 Ohm | - | |
| Diaphragm | - | 28 mm | |
| Features | - | SoundGuard Technology |
| MICROPHONE | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | Omni-directional | 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 4.40 offer a larger microphone frequency range than Poly EncorePro 720D. |
| Microphones Included | 2 | - |
| CABLE | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Cable Length | - | 89 cm |
|---|
| FEATURES | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Features | - | Quick Disconnect, 290° rotatable microphone, boom mic length 120-145 mm |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Battery Type | Headphone battery lithium polymer | - |
|---|
| CONNECTIONS | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| Connector Type | - | USB (USB Type-A) |
|---|
| OTHERS | Sennheiser HD 4.40 | Poly EncorePro 720D |
|---|
| TAA Compliant | - | Yes |
|---|
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