In depth comparison and review of EPOS I SENNHEISER C20 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 | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Product Type | Headset - Bluetooth - wireless - USB-A via Bluetooth adapter | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | C-series | ADAPT 500 Series | |
| Height | 20 cm | - | |
| Width | 16.5 cm | - | |
| Depth | 5.8 cm | - | |
| Weight | 200 g | 232 g | EPOS I SENNHEISER C20 are lighter than EPOS I SENNHEISER C20 headphones. |
| Colour | Black | - | |
| Earpad Material | - | Plush, textured fabric | |
| Recommended Use | - | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | 25 m | 25 m | The maximum operating distance of both headphones is the same. |
| SOUND QUALITY | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | - | Closed | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.0 | |
| 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 | - | 20 - 20000 Hz | |
| Total Harmonic Distortion (THD) | 3% | <0.3% | EPOS I SENNHEISER ADAPT 561 II have lower total harmonic distortion than EPOS I SENNHEISER C20. |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | - | 108 dB | |
| Features | EPOS BrainAdapt Technology | Audio prompts |
| MICROPHONE | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Form Factor | - | Headset microphone | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Operation Mode | - | Beamforming, MEMS-directional | |
| Frequency Response | - | 100 - 10000 Hz | |
| Microphones Included | - | 2 |
| CABLE | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Cable Type | - | USB-C to USB-C cable - detachable |
|---|
| FEATURES | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Battery Type | Headset battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| 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 | 300 hours | 81 day | EPOS I SENNHEISER ADAPT 561 II have longer standby time than EPOS I SENNHEISER C20. |
| Charging Time | 2 hour(s) | 220 min | EPOS I SENNHEISER C20 recharge faster than EPOS I SENNHEISER C20. |
| OTHERS | EPOS I SENNHEISER C20 | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Included Accessories | Carrying case, charging cable, BTD 800 USB dongle | 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 | Limited warranty - 2 years |
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