In depth comparison and review of Sennheiser HD 4.40 and KEF M500. 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 | KEF M500 |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headset - wired | |
|---|---|---|---|
| Weight | - | 208 g | |
| Colour | - | Classic | |
| Body Material | - | Aluminium alloy | |
| Recommended Use | - | Portable electronics, phone |
| SOUND QUALITY | Sennheiser HD 4.40 | KEF M500 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Foldable | - | Yes | KEF M500 can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.0 | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 4.40 offer a larger frequency range than KEF M500. |
| Max Input Power | - | 30 mW | |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 113 dB | 103 dB | Sennheiser HD 4.40 have higher sensitivity than KEF M500. |
| Impedance | 18 Ohm | 32 Ohm | |
| Diaphragm | - | 40 mm | |
| Magnet Material | - | Neodymium | |
| In-Cord Volume Control | - | Yes |
| MICROPHONE | Sennheiser HD 4.40 | KEF M500 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | On-cable | |
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Sennheiser HD 4.40 | KEF M500 |
|---|
| Controls | - | Volume, answer/end, play/pause, next/previous track |
|---|
| CABLE | Sennheiser HD 4.40 | KEF M500 |
|---|
| Cable Type | - | 2 x headset cable - 1.3 m | |
|---|---|---|---|
| Plated Connector | - | Gold |
| BATTERY AND CHARGING | Sennheiser HD 4.40 | KEF M500 |
|---|
| Battery Type | Headphone battery lithium polymer | - |
|---|
| CONNECTIONS | Sennheiser HD 4.40 | KEF M500 |
|---|
| Connector Type | - | Headset (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | Sennheiser HD 4.40 | KEF M500 |
|---|
| Included Accessories | - | Protective case, in-flight plug adapter, 3.5 mm to 6.3 mm adapter | |
|---|---|---|---|
| Service & Support | - | Limited warranty - 1 year |
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