In depth comparison and review of Sennheiser HD 4.40 and Bang & Olufsen Beoplay H9i. 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 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 20 cm | |
| Width | - | 19.5 cm | |
| Depth | - | 5.2 cm | |
| Weight | - | 285 g | |
| 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 | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Headphones Form Factor | Full size | Full size | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | Closed | Closed | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.0 | Bluetooth 4.2 | Bang & Olufsen Beoplay H9i have a more advanced version of Bluetooth than Sennheiser HD 4.40. |
| Bluetooth Audio Codec | - | AAC | |
| Active Noise Cancelling | - | Yes | Bang & Olufsen Beoplay H9i are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Hybrid ANC | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 18 - 22000 Hz | 20 - 22000 Hz | Sennheiser HD 4.40 offer a larger frequency range than Bang & Olufsen Beoplay H9i. |
| Total Harmonic Distortion (THD) | 0.5% | - | |
| Sensitivity | 113 dB | 95 dB/mW | Sennheiser HD 4.40 have higher sensitivity than Bang & Olufsen Beoplay H9i. |
| Impedance | 18 Ohm | 24 Ohm | |
| Diaphragm | - | 40 mm |
| MICROPHONE | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 2 | 2 | Both headphones have a built-in microphone. |
| REMOTE CONTROL | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Controls | - | Volume, power on/off, answer/end, play/pause, next/previous track, pair mode, noise-cancellation suspend button, audio transparency |
|---|
| CABLE | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Cable Type | - | Headphones cable - detachable - 1.2 m USB to USB-C cable - 1.25 m |
|
|---|---|---|---|
| Cable Length | - | 1.2 m |
| FEATURES | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Sensors | - | Proximity sensor |
|---|
| BATTERY AND CHARGING | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Battery Type | Headphone battery lithium polymer | 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 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Connector Type | - | Headphones (mini-phone stereo 3.5 mm 4-pole) |
|---|
| OTHERS | Sennheiser HD 4.40 | Bang & Olufsen Beoplay H9i |
|---|
| Included Accessories | - | Carrying pouch, airplane adapter | |
|---|---|---|---|
| Service & Support | - | Limited warranty - parts and labour - 2 years |
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