In depth comparison and review of EPOS I SENNHEISER ADAPT 561 II and Sennheiser HMDC 27. 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 | Sennheiser HMDC 27 |
|---|
| Product Type | Headset - Bluetooth - wireless | Headset - wired | |
|---|---|---|---|
| Series | ADAPT 500 Series | - | |
| Weight | 232 g | 240 g | EPOS I SENNHEISER ADAPT 561 II are lighter than EPOS I SENNHEISER ADAPT 561 II headphones. |
| Earpad Material | Plush, textured fabric | - | |
| Recommended Use | Portable electronics, computer | Professional audio | |
| Bluetooth Range (Operating Distance) | 25 m | - |
| SOUND QUALITY | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.0 | - | |
| Bluetooth Audio Codec | SBC, AAC | - | |
| Active Noise Cancelling | Yes | Yes | Both headphones 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 | 8 - 18000 Hz | EPOS I SENNHEISER ADAPT 561 II offer a larger frequency range than Sennheiser HMDC 27. |
| Total Harmonic Distortion (THD) | <0.3% | <0.1% | Sennheiser HMDC 27 have lower total harmonic distortion than EPOS I SENNHEISER ADAPT 561 II. |
| Impedance | 32 Ohm | - | |
| Max Sound Pressure | 108 dB | 128 dB | |
| Features | Audio prompts | - |
| MICROPHONE | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Form Factor | Headset microphone | - | |
|---|---|---|---|
| Type | Boom | Boom | |
| Microphone Technology | - | Dynamic | |
| Microphone Operation Mode | Beamforming, MEMS-directional | Hypercardioid | |
| Frequency Response | 100 - 10000 Hz | 40 - 18000 Hz | Sennheiser HMDC 27 offer a larger microphone frequency range than EPOS I SENNHEISER ADAPT 561 II. |
| Microphones Included | 2 | - |
| CABLE | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Cable Type | USB-C to USB-C cable - detachable | - |
|---|
| FEATURES | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Features | EPOS ActiveGard | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Battery Type | 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 | 81 day | - | |
| Charging Time | 220 min | - |
| OTHERS | EPOS I SENNHEISER ADAPT 561 II | Sennheiser HMDC 27 |
|---|
| Included Accessories | Carrying case, BTD 800 USB-C dongle, USB-C to USB-C cable | Wind screen, cable clip, headband padding | |
|---|---|---|---|
| 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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