August EP650 vs. EPOS I SENNHEISER ADAPT 135T USB-C II

Headphones Comparison, Reviews and Tests

In depth comparison and review of August EP650 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

August EP650 vs. EPOS I SENNHEISER ADAPT 135T USB-C II Comparison Chart
DESIGN AND DIMENSIONS August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Product Type Headphones - Bluetooth - wireless - NFC - 3.5 mm jack Headset - wired - 3.5 mm jack, USB-C
Series - ADAPT 100 Series
Height 17.66 cm -
Width 18.86 cm -
Depth 7.1 cm -
Weight 235 g 145.3 g EPOS I SENNHEISER ADAPT 135T USB-C II are lighter than August EP650 headphones.
Colour Gold Black
Earpad Material - Leatherette
Recommended Use Portable electronics, computer Portable electronics, computer
Bluetooth Range (Operating Distance) 10 m -
SOUND QUALITY August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Headphones Form Factor Full size On-ear
Headphones Technology - Dynamic
Foldable Yes - August EP650 can be folded.
Connectivity Technology Wireless Wired
Wireless Technology Bluetooth -
Bluetooth Version Bluetooth 4.1 -
Bluetooth Profiles Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) -
Sound Output Mode Stereo Stereo
Sound Effects - EPOS Voice
Frequency Response 60 - 20000 Hz 20 - 20000 Hz EPOS I SENNHEISER ADAPT 135T USB-C II offer a larger frequency range than August EP650.
Total Harmonic Distortion (THD) 1% -
Max Sound Pressure - 115 dB
Diaphragm 50 mm -
Signal-To-Noise Ratio 85 dB -
Magnet Material - Neodymium
Features Bluetooth aptX technology -
In-Cord Volume Control - Yes
MICROPHONE August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Form Factor Built-in -
Type - 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 August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Controls - Volume, answer/end
CABLE August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Cable Type Headphones cable - detachable Headset cable
FEATURES August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Features - EPOS ActiveGard
BATTERY AND CHARGING August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Battery Type Headphone battery rechargeable - lithium polymer -
Battery Capacity 220 mAh -
Battery Life 10 hour(s) -
Standby Time 720 hours -
Charging Time 2 hour(s) -
CONNECTIONS August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Connector Type Headphones (mini-phone stereo 3.5 mm) Headset (USB Type-C)
Headset (mini-phone 3.5mm)
OTHERS August EP650 EPOS I SENNHEISER ADAPT 135T USB-C II
Included Accessories USB charging cable -
Software Certification - Certified for Microsoft Teams, Optimised for UC
Service & Support Limited warranty - 1 year Limited warranty - 2 years
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