In depth comparison and review of EPOS I SENNHEISER ADAPT 561 II 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 | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Product Type | Headset - Bluetooth - wireless | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | |
|---|---|---|---|
| Series | ADAPT 500 Series | - | |
| Height | - | 7 cm | |
| Width | - | 18.3 cm | |
| Depth | - | 16 cm | |
| Weight | 232 g | 155 g | Poly Voyager Focus B825 are lighter than EPOS I SENNHEISER ADAPT 561 II headphones. |
| Colour | - | Black | |
| Earpad Material | Plush, textured fabric | - | |
| Recommended Use | Portable electronics, computer | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 25 m | 30 m | Poly Voyager Focus B825 have a greater operating distance than EPOS I SENNHEISER ADAPT 561 II. |
| SOUND QUALITY | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 4.1 | EPOS I SENNHEISER ADAPT 561 II have a more advanced version of Bluetooth than Poly Voyager Focus B825. |
| Bluetooth Audio Codec | SBC, AAC | - | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Hybrid ANC | SoundGuard DIGITAL | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | EPOS Voice | - | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | 108 dB | - | |
| Diaphragm | - | 32 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 8 | Poly Voyager Focus B825 have the ability to connect to multiple devices simultaneously. |
| Features | Audio prompts | Smart Sensor Technology |
| MICROPHONE | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Operation Mode | Beamforming, MEMS-directional | MEMS-directional | |
| Frequency Response | 100 - 10000 Hz | 100 - 6700 Hz | EPOS I SENNHEISER ADAPT 561 II offer a larger microphone frequency range than Poly Voyager Focus B825. |
| Microphones Included | 2 | 3 | Poly Voyager Focus B825 have a built-in microphone. |
| REMOTE CONTROL | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Controls | - | Volume, answer/end, microphone on/mute, play/pause |
|---|
| CABLE | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Cable Type | USB-C to USB-C cable - detachable | Micro-USB charging cable |
|---|
| FEATURES | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Features | EPOS ActiveGard | - |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Battery Type | Headset battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | - | 325 mAh | |
| Battery Life | - | 15 hour(s) | |
| Battery Life Details | Continuous playback (noise cancelling OFF): up to 46 hours Continuous talk (noise cancelling OFF): up to 41 hours Continuous playback (noise cancelling ON): up to 24 hours Continuous talk (noise cancelling ON): up to 24 hours |
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 |
|
| Standby Time | 81 day | - | |
| Charging Time | 220 min | 2 hour(s) | Poly Voyager Focus B825 recharge faster than EPOS I SENNHEISER ADAPT 561 II. |
| OTHERS | EPOS I SENNHEISER ADAPT 561 II | Poly Voyager Focus B825 |
|---|
| Included Accessories | Carrying case, BTD 800 USB-C dongle, USB-C to USB-C cable | Travel pouch, BT700 Bluetooth USB adapter | |
|---|---|---|---|
| Software Certification | Zoom Certified, Certified for Microsoft Teams, Optimised for UC, Optimised for Google Meet | Certified for Skype for Business | |
| TAA Compliant | - | Yes | |
| Service & Support | Limited warranty - 2 years | - |
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