In depth comparison and review of Sennheiser HD 250BT 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 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - Bluetooth - wireless | |
|---|---|---|---|
| Series | - | ADAPT 500 Series | |
| Weight | 125 g | 232 g | Sennheiser HD 250BT are lighter than Sennheiser HD 250BT headphones. |
| Earpad Material | - | Plush, textured fabric | |
| Recommended Use | Portable electronics | Portable electronics, computer | |
| Bluetooth Range (Operating Distance) | - | 25 m |
| SOUND QUALITY | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Adjustable Headband | Yes | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | Both headphones have the same Bluetooth version. |
| 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, aptX, apt-X LL | 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 250BT are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | EPOS Voice | |
| Frequency Response | 20 - 22000 Hz | 20 - 20000 Hz | Sennheiser HD 250BT offer a larger frequency range than EPOS I SENNHEISER ADAPT 561 II. |
| Total Harmonic Distortion (THD) | <0.3% | <0.3% | Both headphones have the same total harmonic distortion. |
| Sensitivity | 110 dB | - | |
| Impedance | - | 32 Ohm | |
| Max Sound Pressure | - | 108 dB | |
| Diaphragm | 32 mm | - | |
| Features | Audio prompts | Audio prompts |
| MICROPHONE | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Form Factor | Built-in | Headset microphone | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Omni-directional | 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 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Controls | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call | - |
|---|
| CABLE | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Cable Type | USB-C charge cable - detachable | USB-C to USB-C cable - detachable |
|---|
| FEATURES | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Features | - | EPOS ActiveGard |
|---|
| BATTERY AND CHARGING | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Battery Type | Headphone battery rechargeable | Headset battery rechargeable | |
|---|---|---|---|
| Battery Capacity | 190 mAh | - | |
| Battery Life | 25 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 | - | 81 day | |
| Charging Time | 3 hour(s) | 220 min | Sennheiser HD 250BT recharge faster than Sennheiser HD 250BT. |
| OTHERS | Sennheiser HD 250BT | EPOS I SENNHEISER ADAPT 561 II |
|---|
| Included Accessories | USB-C charging cable | Carrying case, BTD 800 USB-C dongle, USB-C to USB-C cable | |
|---|---|---|---|
| Compatibility | iPhone, Android phone | - | |
| Software Certification | - | Zoom Certified, Certified for Microsoft Teams, Optimised for UC, Optimised for Google Meet | |
| Compliant Standards | Bluetooth Class 1 | - | |
| Service & Support | - | Limited warranty - 2 years |
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