In depth comparison and review of Sennheiser HD 4.40 and Sennheiser HD 820. 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 820 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - wired | |
|---|---|---|---|
| Weight | - | 360 g | |
| Earpad Material | - | Microfibre |
| SOUND QUALITY | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| 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 | - | |
| Noise Isolating | - | Yes | Sennheiser HD 820 are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 6 - 48000 Hz | Sennheiser HD 820 offer a larger frequency range than Sennheiser HD 4.40. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 113 dB | 103 dB/Vrms | Sennheiser HD 4.40 have higher sensitivity than Sennheiser HD 820. |
| Impedance | 18 Ohm | 300 Ohm |
| MICROPHONE | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| CABLE | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| Cable Type | - | Headphones cable - OFC - 3 m | |
|---|---|---|---|
| Cable Length | - | 3 m | |
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| Battery Type | Headphone battery lithium polymer | - |
|---|
| CONNECTIONS | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| Connector Type | - | Headphones (phone stereo 6.3 mm) |
|---|
| OTHERS | Sennheiser HD 4.40 | Sennheiser HD 820 |
|---|
| Included Accessories | - | USB flash drive, microfibre cleaning cloth, 4.4 mm Pentaconn stereo jack plug, XLR-4 connector |
|---|
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