Side by side comparison and review of Sennheiser HD 4.20s and Bang & Olufsen Beoplay H9i. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 20 cm | |
| Width | - | 19.5 cm | |
| Depth | - | 5.2 cm | |
| Weight | - | 285 g | |
| Colour | Black | Natural | Black | Pine | |
| Body Material | - | Fabric, rubber, anodised aluminium, polymer | |
| Earpad Material | - | Leather, memory foam | |
| Headband Material | - | Leather | |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.2 | |
| Bluetooth Audio Codec | - | AAC | |
| Active Noise Cancelling | - | Yes | Bang & Olufsen Beoplay H9i are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Hybrid ANC | |
| Noise Isolating | Yes | - | Sennheiser HD 4.20s are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | - | 20 - 22000 Hz | |
| Sensitivity | - | 95 dB/mW | |
| Impedance | - | 24 Ohm | |
| Diaphragm | - | 40 mm |
| MICROPHONE | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - | |
| Microphone Operation Mode | Omni-directional | - | |
| Sensitivity | -44 dBV/Pascal | - | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Controls | 1-button remote | Volume, power on/off, answer/end, play/pause, next/previous track, pair mode, noise-cancellation suspend button, audio transparency |
|---|
| CABLE | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Cable Type | - | Headphones cable - detachable - 1.2 m USB to USB-C cable - 1.25 m |
|
|---|---|---|---|
| Cable Length | 1.4 m | 1.2 m | |
| Plated Connector | Gold | - |
| FEATURES | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Sensors | - | Proximity sensor |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| 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 | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Connector Type | Headphones (mini-phone 3.5 mm 4-pole) | Headphones (mini-phone stereo 3.5 mm 4-pole) |
|---|
| OTHERS | Sennheiser HD 4.20s | Bang & Olufsen Beoplay H9i |
|---|
| Included Accessories | - | Carrying pouch, airplane adapter | |
|---|---|---|---|
| Service & Support | Limited warranty - parts and labour - 2 years | Limited warranty - parts and labour - 2 years |
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