Side by side comparison and review of KEF M500 and Sennheiser HD 4.50 BTNC Wireless. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Product Type | Headset - wired | Headphones - Bluetooth - wireless - NFC | |
|---|---|---|---|
| Weight | 208 g | 238 g | KEF M500 are lighter than KEF M500 headphones. |
| Colour | Classic | - | |
| Body Material | Aluminium alloy | - | |
| Recommended Use | Portable electronics, phone | Portable electronics |
| SOUND QUALITY | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Adjustable Headband | Yes | - | |
| Foldable | Yes | Yes | Both headphones can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.0 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Active Noise Cancelling | - | Yes | Sennheiser HD 4.50 BTNC Wireless are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | NoiseGard active noise compensation | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 18 - 22000 Hz | Sennheiser HD 4.50 BTNC Wireless offer a larger frequency range than KEF M500. |
| Max Input Power | 30 mW | - | |
| Total Harmonic Distortion (THD) | - | <0.5% | |
| Sensitivity | 103 dB | 113 dB | Sennheiser HD 4.50 BTNC Wireless have higher sensitivity than KEF M500. |
| Impedance | 32 Ohm | 18 Ohm | |
| Diaphragm | 40 mm | - | |
| Magnet Material | Neodymium | Neodymium | |
| Features | - | Bluetooth aptX technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | - | Omni-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Controls | Volume, answer/end, play/pause, next/previous track | Power on/off, volume control, answer/end, hold, play/pause, next/previous track, reject call, redial |
|---|
| CABLE | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Cable Type | 2 x headset cable - 1.3 m | Headphones cable - detachable - L shaped - 1.4 m Micro-USB charge cable - detachable |
|
|---|---|---|---|
| Cable Length | - | 1.4 m | |
| Detachable Cable | - | Yes | |
| Plated Connector | Gold | Gold |
| BATTERY AND CHARGING | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Battery Type | - | Headphone battery rechargeable - lithium polymer | |
|---|---|---|---|
| Battery Capacity | - | 600 mAh | |
| Battery Life | - | 25 hour(s) | |
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Connector Type | Headset (mini-phone stereo 3.5 mm) | Headphones (mini-phone stereo 3.5 mm) |
|---|
| OTHERS | KEF M500 | Sennheiser HD 4.50 BTNC Wireless |
|---|
| Included Accessories | Protective case, in-flight plug adapter, 3.5 mm to 6.3 mm adapter | Carrying case, micro-USB charging cable | |
|---|---|---|---|
| Service & Support | Limited warranty - 1 year | - |
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