In depth comparison and review of Sennheiser HD 4.40 and Sennheiser HD 300 PROtect. 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 | Sennheiser HD 300 PROtect |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | - | 297 g |
| SOUND QUALITY | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 300 PROtect are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 6 - 25000 Hz | Sennheiser HD 300 PROtect offer a larger frequency range than Sennheiser HD 4.40. |
| Max Input Power | - | 500 mW | |
| Total Harmonic Distortion (THD) | 0.5% | <0.1% | Sennheiser HD 300 PROtect have lower total harmonic distortion than Sennheiser HD 4.40. |
| Sensitivity | 113 dB | 108 dB | Sennheiser HD 4.40 have higher sensitivity than Sennheiser HD 300 PROtect. |
| Impedance | 18 Ohm | 64 Ohm |
| MICROPHONE | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| CABLE | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Cable Type | - | Headphones cable - 1.55 m | |
|---|---|---|---|
| Cable Length | - | 1.55 m |
| FEATURES | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Battery Type | Headphone battery lithium polymer | - |
|---|
| CONNECTIONS | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Sennheiser HD 4.40 | Sennheiser HD 300 PROtect |
|---|
| Included Accessories | - | 6.3 mm (1/4") stereo adapter |
|---|
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