In depth comparison and review of Sennheiser PXC 550 Wireless and Sennheiser HD 4.40. 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 PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Series | PXC | - | |
| Weight | 227 g | - | |
| Recommended Use | Home audio, portable electronics | - |
| SOUND QUALITY | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | Closed | |
| Foldable | Yes | - | Sennheiser PXC 550 Wireless can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.2 | Bluetooth 4.0 | Sennheiser PXC 550 Wireless have a more advanced version of Bluetooth than Sennheiser HD 4.40. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Device ID Profile (DIP) | - | |
| Active Noise Cancelling | Yes | - | Sennheiser PXC 550 Wireless are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | NoiseGard active noise compensation | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 17 - 23000 Hz | 18 - 22000 Hz | Sennheiser PXC 550 Wireless offer a larger frequency range than Sennheiser HD 4.40. |
| Total Harmonic Distortion (THD) | 0.5% | 0.5% | Both headphones have the same total harmonic distortion. |
| Sensitivity | 110 dB | 113 dB | Sennheiser HD 4.40 have higher sensitivity than Sennheiser PXC 550 Wireless. |
| Impedance | 490 Ohm | 18 Ohm |
| MICROPHONE | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | 3 | 2 | Sennheiser PXC 550 Wireless have a built-in microphone. |
| REMOTE CONTROL | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Controls | Volume | - |
|---|
| CABLE | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Cable Type | Headphones cable - detachable USB cable - detachable |
- | |
|---|---|---|---|
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Features | Voice alerts | - |
|---|
| BATTERY AND CHARGING | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery lithium polymer | |
|---|---|---|---|
| Battery Life | 30 hour(s) | - | |
| Charging Time | 3 hour(s) | - |
| CONNECTIONS | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
|---|
| OTHERS | Sennheiser PXC 550 Wireless | Sennheiser HD 4.40 |
|---|
| Included Accessories | Carrying case, audio cable, in-flight plug adapter, 3.5 mm to 6.3 mm adapter, USB charge cable | - | |
|---|---|---|---|
| Software Included | CapTune | - |
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