In depth comparison and review of Sennheiser HD 400S 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 | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | - | ADAPT 500 Series | |
| Weight | 217 g | 232 g | Sennheiser HD 400S are lighter than Sennheiser HD 400S headphones. |
| Colour | Black | - | |
| Earpad Material | - | Plush, textured fabric | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 25 m |
| SOUND QUALITY | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Foldable | Yes | - | Sennheiser HD 400S can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | 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 | |
| Noise Isolating | Yes | - | Sennheiser HD 400S are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 18 - 20000 Hz | 20 - 20000 Hz | Sennheiser HD 400S offer a larger frequency range than EPOS I SENNHEISER ADAPT 561 II. |
| Total Harmonic Distortion (THD) | 0.5% | <0.3% | EPOS I SENNHEISER ADAPT 561 II have lower total harmonic distortion than Sennheiser HD 400S. |
| Impedance | 18 Ohm | 32 Ohm | |
| Max Sound Pressure | 120 dB | 108 dB | |
| Features | - | Audio prompts |
| MICROPHONE | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Form Factor | - | Headset microphone | |
|---|---|---|---|
| Type | On-cable | Boom | |
| Microphone Operation Mode | - | Beamforming, MEMS-directional | |
| Frequency Response | 100 - 10000 Hz | 100 - 10000 Hz | The frequency response of the microphones in both headphones is the same. |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Controls | Answer/end, play/pause, next/previous track | - |
|---|
| CABLE | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Cable Type | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | USB-C to USB-C cable - detachable | |
|---|---|---|---|
| Cable Length | 1.4 m | - | |
| Detachable Cable | Yes | - |
| FEATURES | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| 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 |
| CONNECTIONS | Sennheiser HD 400S | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | - |
|---|
| OTHERS | Sennheiser HD 400S | 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 | Limited warranty - 2 years |
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