EPOS I SENNHEISER IMPACT MB 660 UC vs. Bowers & Wilkins P9 Signature

Headphones Comparison, Reviews and Tests

In depth comparison and review of EPOS I SENNHEISER IMPACT MB 660 UC and Bowers & Wilkins P9 Signature. 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.

Headphones Specifications Comparison

EPOS I SENNHEISER IMPACT MB 660 UC vs. Bowers & Wilkins P9 Signature Comparison Chart
DESIGN AND DIMENSIONS EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Product Type Headset - Bluetooth - wireless - NFC - USB, 3.5 mm jack Headphones - wired - 3.5 mm jack
Weight 227 g 413 g EPOS I SENNHEISER IMPACT MB 660 UC are lighter than EPOS I SENNHEISER IMPACT MB 660 UC headphones.
Colour - Brown
Earpad Material - Leather, memory foam
Headband Material - Aluminium, memory foam
Recommended Use Portable electronics, computer -
Bluetooth Range (Operating Distance) 25 m -
SOUND QUALITY EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Headphones Form Factor Full size Full size
Headphones Technology Dynamic -
Ear Cups Type Closed -
Foldable Yes Yes Both headphones 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), Device ID Profile (DIP) -
Bluetooth Audio Codec SBC, aptX -
Active Noise Cancelling Yes - EPOS I SENNHEISER IMPACT MB 660 UC are equipped with active noice cancellation.
Active Noise Cancelling Technology NoiseGard active noise compensation -
Sound Output Mode Stereo Stereo
Frequency Response 17 - 23000 Hz 2 - 30000 Hz Bowers & Wilkins P9 Signature offer a larger frequency range than EPOS I SENNHEISER IMPACT MB 660 UC.
Max Input Power - 50 mW
Total Harmonic Distortion (THD) <0.5% 0.2% Bowers & Wilkins P9 Signature have lower total harmonic distortion than EPOS I SENNHEISER IMPACT MB 660 UC.
Sensitivity 118 dB 111 dB EPOS I SENNHEISER IMPACT MB 660 UC have higher sensitivity than Bowers & Wilkins P9 Signature.
Impedance 46 Ohm 22 Ohm
Diaphragm - 40 mm
MICROPHONE EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Form Factor Built-in -
Type - On-cable
Frequency Response 150 - 6800 Hz -
Microphones Included 3 -
CABLE EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Cable Type Audio cable
Micro-USB cable
Headphones cable - detachable - 1.2 m
Headphones cable - detachable - 5 m
Detachable Cable - Yes
BATTERY AND CHARGING EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Battery Type Headset battery rechargeable - lithium polymer -
Battery Capacity 700 mAh -
Battery Life 30 hours -
Standby Time 360 hours -
Charging Time 3 hours -
WIRELESS LINK EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Transmission Range 25 m -
CONNECTIONS EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Connector Type - Headphones (mini-phone 3.5 mm 4-pole)
OTHERS EPOS I SENNHEISER IMPACT MB 660 UC Bowers & Wilkins P9 Signature
Included Accessories Carrying case, Bluetooth adapter, airplane adapter Carrying case, 3.5 mm to 6.3 mm adapter
Service & Support Limited warranty - 2 years Limited warranty - parts and labour - 2 years
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