Bowers & Wilkins P9 Signature vs. EPOS I SENNHEISER ADAPT 135T USB-C II

Headphones Comparison, Reviews and Tests

In depth comparison and review of Bowers & Wilkins P9 Signature and EPOS I SENNHEISER ADAPT 135T USB-C II. 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

Bowers & Wilkins P9 Signature vs. EPOS I SENNHEISER ADAPT 135T USB-C II Comparison Chart
DESIGN AND DIMENSIONS Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Product Type Headphones - wired - 3.5 mm jack Headset - wired - 3.5 mm jack, USB-C
Series - ADAPT 100 Series
Weight 413 g 145.3 g EPOS I SENNHEISER ADAPT 135T USB-C II are lighter than Bowers & Wilkins P9 Signature headphones.
Colour Brown Black
Earpad Material Leather, memory foam Leatherette
Headband Material Aluminium, memory foam -
Recommended Use - Portable electronics, computer
SOUND QUALITY Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Headphones Form Factor Full size On-ear
Headphones Technology - Dynamic
Foldable Yes - Bowers & Wilkins P9 Signature can be folded.
Connectivity Technology Wired Wired
Sound Output Mode Stereo Stereo
Sound Effects - EPOS Voice
Frequency Response 2 - 30000 Hz 20 - 20000 Hz Bowers & Wilkins P9 Signature offer a larger frequency range than EPOS I SENNHEISER ADAPT 135T USB-C II.
Max Input Power 50 mW -
Total Harmonic Distortion (THD) 0.2% -
Sensitivity 111 dB -
Impedance 22 Ohm -
Max Sound Pressure - 115 dB
Diaphragm 40 mm -
Magnet Material - Neodymium
In-Cord Volume Control - Yes
MICROPHONE Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Type On-cable Boom
Microphone Operation Mode - Mono
Noise Cancelling - Yes EPOS I SENNHEISER ADAPT 135T USB-C II microphone can cancel out ambient noise.
Frequency Response - 100 - 8000 Hz
REMOTE CONTROL Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Controls - Volume, answer/end
CABLE Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Cable Type Headphones cable - detachable - 1.2 m
Headphones cable - detachable - 5 m
Headset cable
Detachable Cable Yes -
FEATURES Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Features - EPOS ActiveGard
CONNECTIONS Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Connector Type Headphones (mini-phone 3.5 mm 4-pole) Headset (USB Type-C)
Headset (mini-phone 3.5mm)
OTHERS Bowers & Wilkins P9 Signature EPOS I SENNHEISER ADAPT 135T USB-C II
Included Accessories Carrying case, 3.5 mm to 6.3 mm adapter -
Software Certification - Certified for Microsoft Teams, Optimised for UC
Service & Support Limited warranty - parts and labour - 2 years Limited warranty - 2 years
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