Detailed comparison and review of Sennheiser HD 400S and Poly Voyager Focus B825-M. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
| DESIGN AND DIMENSIONS | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Height | - | 7 cm | |
| Width | - | 18.3 cm | |
| Depth | - | 16 cm | |
| Weight | 217 g | 155 g | Poly Voyager Focus B825-M are lighter than Sennheiser HD 400S headphones. |
| Colour | Black | Black | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 30 m |
| SOUND QUALITY | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sennheiser HD 400S can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Active Noise Cancelling | - | Yes | Poly Voyager Focus B825-M are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard | |
| Noise Isolating | Yes | - | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 20000 Hz | 20 - 20000 Hz | Sennheiser HD 400S offer a larger frequency range than Poly Voyager Focus B825-M. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Impedance | 18 Ohm | - | |
| Max Sound Pressure | 120 dB | - | |
| Diaphragm | - | 32 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 8 | Poly Voyager Focus B825-M have the ability to connect to multiple devices simultaneously. |
| Features | - | Smart Sensor Technology |
| MICROPHONE | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Type | On-cable | Boom | |
|---|---|---|---|
| Microphone Operation Mode | - | MEMS-directional | |
| Frequency Response | 100 - 10000 Hz | 100 - 6700 Hz | Sennheiser HD 400S offer a larger microphone frequency range than Poly Voyager Focus B825-M. |
| Microphones Included | - | 3 |
| REMOTE CONTROL | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Controls | Answer/end, play/pause, next/previous track | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Cable Type | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | Micro-USB charging cable | |
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Detachable Cable | Yes | - |
| BATTERY AND CHARGING | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| 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 | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
|---|
| OTHERS | Sennheiser HD 400S | Poly Voyager Focus B825-M |
|---|
| Included Accessories | - | Travel pouch, BT700 Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | - | Certified for Skype for Business, Certified for Microsoft Teams | |
| Service & Support | Limited warranty - 2 years | - |
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