In depth comparison and review of KEF M500 and Poly Voyager Focus B825. 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 | KEF M500 | Poly Voyager Focus B825 |
|---|
| Product Type | Headset - wired | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Height | - | 7 cm | |
| Width | - | 18.3 cm | |
| Depth | - | 16 cm | |
| Weight | 208 g | 155 g | Poly Voyager Focus B825 are lighter than KEF M500 headphones. |
| Colour | Classic | Black | |
| Body Material | Aluminium alloy | - | |
| Recommended Use | Portable electronics, phone | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | KEF M500 | Poly Voyager Focus B825 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | - | |
| Foldable | Yes | - | KEF M500 can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Active Noise Cancelling | - | Yes | Poly Voyager Focus B825 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard DIGITAL | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Max Input Power | 30 mW | - | |
| Sensitivity | 103 dB | - | |
| Impedance | 32 Ohm | - | |
| Diaphragm | 40 mm | 32 mm | KEF M500 have a thicker diaphragm than Poly Voyager Focus B825. |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 8 | Poly Voyager Focus B825 have the ability to connect to multiple devices simultaneously. |
| Magnet Material | Neodymium | - | |
| Features | - | Smart Sensor Technology | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | KEF M500 | Poly Voyager Focus B825 |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | MEMS-directional | |
| Frequency Response | - | 100 - 6700 Hz | |
| Microphones Included | - | 3 |
| REMOTE CONTROL | KEF M500 | Poly Voyager Focus B825 |
|---|
| Controls | Volume, answer/end, play/pause, next/previous track | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | KEF M500 | Poly Voyager Focus B825 |
|---|
| Cable Type | 2 x headset cable - 1.3 m | Micro-USB charging cable | |
|---|---|---|---|
| Plated Connector | Gold | - |
| BATTERY AND CHARGING | KEF M500 | Poly Voyager Focus B825 |
|---|
| Battery Type | - | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | - | 325 mAh | |
| Battery Life | - | 15 hour(s) | |
| Battery Life Details | - | Continuous playback (AAC, active noise-cancelling on): up to 12 hours Continuous talk (active noise-cancelling off): up to 12 hours Continuous talk (active noise-cancelling on): up to 10 hours Continuous playback (active noise-cancelling off): up to 15 hours |
|
| Charging Time | - | 2 hour(s) |
| CONNECTIONS | KEF M500 | Poly Voyager Focus B825 |
|---|
| Connector Type | Headset (mini-phone stereo 3.5 mm) | - |
|---|
| OTHERS | KEF M500 | Poly Voyager Focus B825 |
|---|
| Included Accessories | Protective case, in-flight plug adapter, 3.5 mm to 6.3 mm adapter | Travel pouch, BT700 Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | - | Certified for Skype for Business | |
| TAA Compliant | - | Yes | |
| Service & Support | Limited warranty - 1 year | - |
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