In depth comparison and review of Poly - Plantronics Backbeat FIT 505 and EPOS I SENNHEISER ADAPT 561 II. 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 | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | - | ADAPT 500 Series | |
| Height | 6.726 cm | - | |
| Width | 14.877 cm | - | |
| Depth | 17.155 cm | - | |
| Weight | 155 g | 232 g | Poly - Plantronics Backbeat FIT 505 are lighter than Poly - Plantronics Backbeat FIT 505 headphones. |
| Colour | Black | - | |
| Earpad Material | Memory foam | Plush, textured fabric | |
| Headband Material | Memory foam | - | |
| Protection | Moisture-resistant, sweat-resistant | - | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 10 m | 25 m | EPOS I SENNHEISER ADAPT 561 II have a greater operating distance than Poly - Plantronics Backbeat FIT 505. |
| SOUND QUALITY | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| 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 4.1 | Bluetooth 5.0 | EPOS I SENNHEISER ADAPT 561 II have a more advanced version of Bluetooth than Poly - Plantronics Backbeat FIT 505. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | - | SBC, AAC | |
| Active Noise Cancelling | - | Yes | EPOS I SENNHEISER ADAPT 561 II are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Hybrid ANC | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 50 - 20000 Hz | 20 - 20000 Hz | EPOS I SENNHEISER ADAPT 561 II offer a larger frequency range than Poly - Plantronics Backbeat FIT 505. |
| Total Harmonic Distortion (THD) | <3% | <0.3% | EPOS I SENNHEISER ADAPT 561 II have lower total harmonic distortion than Poly - Plantronics Backbeat FIT 505. |
| Impedance | 32 Ohm | 32 Ohm | |
| Max Sound Pressure | - | 108 dB | |
| Diaphragm | 40 mm | - | |
| Features | - | Audio prompts |
| MICROPHONE | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Form Factor | Built-in | Headset microphone | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Operation Mode | - | Beamforming, MEMS-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Controls | Answer/end, play/pause, next/previous track | - |
|---|
| CABLE | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Cable Type | Micro-USB charge cable Audio cable |
USB-C to USB-C cable - detachable |
|---|
| FEATURES | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Battery Type | Headphone battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| Battery Life | 18 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 |
|
| Standby Time | 480 hours | 81 day | EPOS I SENNHEISER ADAPT 561 II have longer standby time than Poly - Plantronics Backbeat FIT 505. |
| Charging Time | 1.5 hour(s) | 220 min | Poly - Plantronics Backbeat FIT 505 recharge faster than Poly - Plantronics Backbeat FIT 505. |
| WIRELESS LINK | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Transmission Range | 10 m | - |
|---|
| OTHERS | Poly - Plantronics Backbeat FIT 505 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Included Accessories | - | Carrying case, BTD 800 USB-C dongle, USB-C to USB-C cable | |
|---|---|---|---|
| Software Certification | - | Zoom Certified, Certified for Microsoft Teams, Optimised for UC, Optimised for Google Meet | |
| Service & Support | - | Limited warranty - 2 years |
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