Side by side comparison and review of Bang & Olufsen Beoplay H9 and Sennheiser HD 400S. 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 | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Product Type | Headphones - Bluetooth - wireless | Headphones - wired - 3.5 mm jack | |
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Height | 22.5 cm | - | |
Width | 19.7 cm | - | |
Depth | 4 cm | - | |
Weight | 285 g | 217 g | Sennheiser HD 400S are lighter than Bang & Olufsen Beoplay H9 headphones. |
Colour | Argilla grey | Black | Black | |
Body Material | Anodised aluminium | - | |
Earpad Material | Leather | - | |
Recommended Use | Portable electronics | Portable electronics |
SOUND QUALITY | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Headphones Form Factor | Full size | Full size | |
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Headphones Technology | Dynamic | Dynamic | |
Ear Cups Type | - | Closed | |
Adjustable Headband | Yes | - | |
Foldable | - | Yes | Sennheiser HD 400S can be folded. |
Connectivity Technology | Wireless | Wired | |
Wireless Technology | Bluetooth | - | |
Bluetooth Version | Bluetooth 4.2 | - | |
Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
Bluetooth Audio Codec | AAC, aptX | - | |
Active Noise Cancelling | Yes | - | Bang & Olufsen Beoplay H9 are equipped with active noice cancellation. |
Noise Isolating | - | Yes | Sennheiser HD 400S are equipped with a noise isolating function. |
Sound Output Mode | Stereo | Stereo | |
Sound Effects | Signature Sound | - | |
Frequency Response | 20 - 22000 Hz | 18 - 20000 Hz | Bang & Olufsen Beoplay H9 offer a larger frequency range than Sennheiser HD 400S. |
Total Harmonic Distortion (THD) | - | 0.5% | |
Sensitivity | 93 dB/mW | - | |
Impedance | 20 Ohm | 18 Ohm | |
Max Sound Pressure | - | 120 dB | |
Diaphragm | 40 mm | - | |
Features | Bluetooth aptX technology | - |
MICROPHONE | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Form Factor | Built-in | - | |
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Type | - | On-cable | |
Microphone Technology | Electret condenser | - | |
Microphone Operation Mode | Omni-directional | - | |
Frequency Response | - | 100 - 10000 Hz |
REMOTE CONTROL | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Controls | Volume, answer/end, play/pause, next/previous track, noise-cancellation suspend button | Answer/end, play/pause, next/previous track |
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CABLE | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Cable Type | Headphones cable - detachable - 1.2 m | Headphones cable - detachable - L shaped / mini-phone stereo 3.5 mm - 1.4 m | |
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Cable Length | - | 1.4 m | |
Detachable Cable | - | Yes |
BATTERY AND CHARGING | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Battery Type | Headphone battery rechargeable | - | |
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Battery Capacity | 770 mAh | - | |
Battery Life | 21 hour(s) | - | |
Battery Life Details | Continuous playback (noise cancelling ON / Bluetooth): up to 14 hours Continuous playback (noise cancelling OFF): up to 16 hours Continuous playback (noise cancelling ON / cable connection): up to 21 hours |
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Charging Time | 2.5 hour(s) | - |
CONNECTIONS | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Connector Type | Headphones (mini-phone stereo 3.5 mm) | Headphones (mini-phone stereo 3.5 mm) |
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OTHERS | Bang & Olufsen Beoplay H9 | Sennheiser HD 400S |
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Included Accessories | Carrying pouch, airplane adapter, micro-USB charging cable (30cm) | - | |
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Service & Support | Limited warranty - 2 years | Limited warranty - 2 years |