In depth comparison and review of Bang & Olufsen Beoplay H9i and Poly Blackwire 8225. 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 | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headset - wired - USB-C | |
|---|---|---|---|
| Height | 20 cm | - | |
| Width | 19.5 cm | - | |
| Depth | 5.2 cm | - | |
| Weight | 285 g | 186 g | Poly Blackwire 8225 are lighter than Bang & Olufsen Beoplay H9i headphones. |
| Colour | Natural | Black | Pine | - | |
| Body Material | Fabric, rubber, anodised aluminium, polymer | - | |
| Earpad Material | Leather, memory foam | - | |
| Headband Material | Leather | - | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 4.2 | - | |
| Bluetooth Audio Codec | AAC | - | |
| Active Noise Cancelling | Yes | Yes | Both headphones are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Hybrid ANC | Hybrid ANC | |
| Sound Output Mode | Stereo | - | |
| Frequency Response | 20 - 22000 Hz | 20 - 20000 Hz | Bang & Olufsen Beoplay H9i offer a larger frequency range than Poly Blackwire 8225. |
| Sensitivity | 95 dB/mW | 84 dB | Bang & Olufsen Beoplay H9i have higher sensitivity than Poly Blackwire 8225. |
| Impedance | 24 Ohm | 32 Ohm | |
| Diaphragm | 40 mm | 32 mm | Bang & Olufsen Beoplay H9i have a thicker diaphragm than Poly Blackwire 8225. |
| Features | - | SoundGuard DIGITAL Technology |
| MICROPHONE | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | Boom | |
| Noise Cancelling | - | Yes | Poly Blackwire 8225 microphone can cancel out ambient noise. |
| Frequency Response | - | 100 - 10000 Hz | |
| Sensitivity | - | -35 dBV/Pascal | |
| Microphones Included | 2 | - |
| REMOTE CONTROL | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Controls | Volume, power on/off, answer/end, play/pause, next/previous track, pair mode, noise-cancellation suspend button, audio transparency | Mute, volume, answer/end |
|---|
| CABLE | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Cable Type | Headphones cable - detachable - 1.2 m USB to USB-C cable - 1.25 m |
Headset cable - 2.2 m | |
|---|---|---|---|
| Cable Length | 1.2 m | 2.2 m |
| FEATURES | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Sensors | Proximity sensor | - |
|---|
| BATTERY AND CHARGING | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | - | |
|---|---|---|---|
| Battery Capacity | 770 mAh | - | |
| Battery Life | 24 hour(s) | - | |
| Battery Life Details | Continuous playback (noise cancelling ON / Bluetooth): up to 18 hours Continuous playback (noise cancelling OFF): up to 23 hours Continuous playback (noise cancelling ON / cable connection): up to 24 hours |
- | |
| Charging Time | 2.5 hour(s) | - |
| CONNECTIONS | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | Headset (USB Type-C) |
|---|
| OTHERS | Bang & Olufsen Beoplay H9i | Poly Blackwire 8225 |
|---|
| Included Accessories | Carrying pouch, airplane adapter | - | |
|---|---|---|---|
| Software Certification | - | Zoom Certified | |
| Service & Support | Limited warranty - parts and labour - 2 years | - |
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