Sennheiser HD 4.20s vs. Bang & Olufsen Beoplay H9

Headphones Comparison, Reviews and Tests

Side by side comparison and review of Sennheiser HD 4.20s and Bang & Olufsen Beoplay H9. 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.

Headphones Specifications Comparison

Sennheiser HD 4.20s vs. Bang & Olufsen Beoplay H9 Comparison Chart
DESIGN AND DIMENSIONS Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Product Type Headphones - wired - 3.5 mm jack Headphones - Bluetooth - wireless
Height - 22.5 cm
Width - 19.7 cm
Depth - 4 cm
Weight - 285 g
Colour Black Argilla grey | Black
Body Material - Anodised aluminium
Earpad Material - Leather
Recommended Use - Portable electronics
SOUND QUALITY Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Headphones Form Factor Full size Full size
Headphones Technology - Dynamic
Ear Cups Type Closed -
Adjustable Headband - Yes
Connectivity Technology Wired Wireless
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 4.20s are equipped with a noise isolating function.
Sound Output Mode Stereo Stereo
Sound Effects - Signature Sound
Frequency Response - 20 - 22000 Hz
Sensitivity - 93 dB/mW
Impedance - 20 Ohm
Diaphragm - 40 mm
Features - Bluetooth aptX technology
MICROPHONE Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Form Factor - Built-in
Type On-cable -
Microphone Technology - Electret condenser
Microphone Operation Mode Omni-directional Omni-directional
Sensitivity -44 dBV/Pascal -
REMOTE CONTROL Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Controls 1-button remote Volume, answer/end, play/pause, next/previous track, noise-cancellation suspend button
CABLE Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Cable Type - Headphones cable - detachable - 1.2 m
Cable Length 1.4 m -
Plated Connector Gold -
BATTERY AND CHARGING Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Battery Type - Headphone battery rechargeable
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
Charging Time - 2.5 hour(s)
CONNECTIONS Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Connector Type Headphones (mini-phone 3.5 mm 4-pole) Headphones (mini-phone stereo 3.5 mm)
OTHERS Sennheiser HD 4.20s Bang & Olufsen Beoplay H9
Included Accessories - Carrying pouch, airplane adapter, micro-USB charging cable (30cm)
Service & Support Limited warranty - parts and labour - 2 years Limited warranty - 2 years
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