In depth comparison and review of Sennheiser HD 250BT and Poly EncorePro 520V. 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 | Poly EncorePro 520V |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - 3.5 mm jack | |
|---|---|---|---|
| Series | - | EncorePro 500 series | |
| Height | - | 6.7 cm | |
| Width | - | 11.1 cm | |
| Depth | - | 14.9 cm | |
| Weight | 125 g | 74 g | Poly EncorePro 520V are lighter than Sennheiser HD 250BT headphones. |
| Colour | - | Black | |
| Earpad Material | - | Artificial leather | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | Yes | - | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 5.0 | - | |
| 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 | - | |
| Active Noise Cancelling | - | Yes | Poly EncorePro 520V are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | SoundGuard DIGITAL | |
| Noise Isolating | Yes | - | Sennheiser HD 250BT are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 22000 Hz | - | |
| Total Harmonic Distortion (THD) | <0.3% | - | |
| Sensitivity | 110 dB | - | |
| Diaphragm | 32 mm | 5.6 mm | Sennheiser HD 250BT have a thicker diaphragm than Poly EncorePro 520V. |
| Signal-To-Noise Ratio | - | 50 dB | |
| Features | Audio prompts | - |
| MICROPHONE | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Omni-directional | Omni-directional | |
| Noise Cancelling | - | Yes | Poly EncorePro 520V microphone can cancel out ambient noise. |
| Frequency Response | 100 - 10000 Hz | 20 - 16000 Hz | Poly EncorePro 520V offer a larger microphone frequency range than Sennheiser HD 250BT. |
| Sensitivity | - | 40 dB | |
| Sensitivity Margin | - | +/- 3dB |
| REMOTE CONTROL | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Controls | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call | - |
|---|
| CABLE | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Cable Type | USB-C charge cable - detachable | - | |
|---|---|---|---|
| Cable Length | - | 78.5 cm |
| FEATURES | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Features | - | Boom mic length 135mm, 290° rotatable microphone |
|---|
| BATTERY AND CHARGING | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Battery Type | Headphone battery rechargeable | - | |
|---|---|---|---|
| Battery Capacity | 190 mAh | - | |
| Battery Life | 25 hour(s) | - | |
| Charging Time | 3 hour(s) | - |
| CONNECTIONS | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Connector Type | - | Headset (mini-phone 3.5mm) |
|---|
| OTHERS | Sennheiser HD 250BT | Poly EncorePro 520V |
|---|
| Included Accessories | USB-C charging cable | - | |
|---|---|---|---|
| Compatibility | iPhone, Android phone | - | |
| Software Certification | - | Certified for Skype for Business, UC certified | |
| Supported Host Device OS | - | macOS, Windows | |
| Compliant Standards | Bluetooth Class 1 | - | |
| Service & Support | - | Limited warranty - 2 years |
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