In depth comparison and review of Sennheiser HD 4.40 and beyerdynamic DT 990 PRO. 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 | beyerdynamic DT 990 PRO |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | - | 250 g | |
| Colour | - | Black |
| SOUND QUALITY | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Open | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 5 - 35000 Hz | beyerdynamic DT 990 PRO offer a larger frequency range than Sennheiser HD 4.40. |
| Max Input Power | - | 100 mW | |
| Total Harmonic Distortion (THD) | 0.5% | 0.2% | beyerdynamic DT 990 PRO have lower total harmonic distortion than Sennheiser HD 4.40. |
| Sensitivity | 113 dB | 96 dB | Sennheiser HD 4.40 have higher sensitivity than beyerdynamic DT 990 PRO. |
| Impedance | 18 Ohm | 250 Ohm |
| MICROPHONE | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| CABLE | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Cable Type | - | Headphones cable - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Battery Type | Headphone battery lithium polymer | - |
|---|
| CONNECTIONS | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Connector Type | - | Headphones (mini-phone 3.5mm) |
|---|
| OTHERS | Sennheiser HD 4.40 | beyerdynamic DT 990 PRO |
|---|
| Included Accessories | - | 6.3 mm (1/4") stereo adapter |
|---|
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