Sennheiser CX 400BT vs. Shure AONIC 215 True Wireless

Headphones Comparison, Reviews and Tests

In depth comparison and review of Sennheiser CX 400BT and Shure AONIC 215 True Wireless. 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

Sennheiser CX 400BT vs. Shure AONIC 215 True Wireless Comparison Chart
DESIGN AND DIMENSIONS Sennheiser CX 400BT Shure AONIC 215 True Wireless
Product Type True wireless earphones - Bluetooth - wireless True wireless earphones - Bluetooth - wireless
Series - Sound Isolating
Weight - 20.8 g
Dimensions & Weight Details Earbud: 6 g
Charging case: 37 g
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Colour White | Black Black
Recommended Use Portable electronics Portable electronics
Bluetooth Range (Operating Distance) - 10 m
SOUND QUALITY Sennheiser CX 400BT Shure AONIC 215 True Wireless
Headphones Form Factor In-ear In-ear - over-the-ear mount
Headphones Technology Dynamic -
Connectivity Technology Wireless Wireless
Wireless Technology Bluetooth Bluetooth
Bluetooth Version Bluetooth 5.1 Bluetooth 5.0 Sennheiser CX 400BT have a more advanced version of Bluetooth than Shure AONIC 215 True Wireless.
Bluetooth Profiles Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) -
Bluetooth Audio Codec SBC, AAC, aptX SBC, AAC, aptX
Noise Isolating - Yes Shure AONIC 215 True Wireless are equipped with a noise isolating function.
Sound Output Mode Stereo Stereo
Frequency Response 5 - 21000 Hz 22 - 17500 Hz Sennheiser CX 400BT offer a larger frequency range than Shure AONIC 215 True Wireless.
Total Harmonic Distortion (THD) 0.08% -
Sensitivity - 107 dB/mW
Impedance - 17 Ohm
Max Sound Pressure 107 dB -
Diaphragm 7 mm -
MICROPHONE Sennheiser CX 400BT Shure AONIC 215 True Wireless
Form Factor Built-in Built-in
REMOTE CONTROL Sennheiser CX 400BT Shure AONIC 215 True Wireless
Controls Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset Power on/off, answer/end, play/pause, pair mode, voice assistant, environment mode
CABLE Sennheiser CX 400BT Shure AONIC 215 True Wireless
Cable Type USB-C to USB-A cable - detachable - straight - 25 cm -
Detachable Cable - Yes
FEATURES Sennheiser CX 400BT Shure AONIC 215 True Wireless
Features Voice alerts, touch control -
Intelligent Assistant Siri, Google Assistant -
Additional Functions - Amplifier
BATTERY AND CHARGING Sennheiser CX 400BT Shure AONIC 215 True Wireless
Battery Type Headphone battery rechargeable - Lithium Ion 2 x headphone battery rechargeable
Battery Capacity 55 mAh -
Battery Life 7 hour(s) 8 hour(s) Shure AONIC 215 True Wireless lasts longer on a single charge than the Sennheiser CX 400BT.
Battery Life Details Continuous playback (50% volume): up to 7 hours
Continuous playback (with included charging case): up to 20 hours
Continuous playback: up to 8 hours
Continuous playback (with included charging case): up to 32 hours
Charging Time 1.5 hour(s) -
Included Qty 2 2
WIRELESS LINK Sennheiser CX 400BT Shure AONIC 215 True Wireless
Radio Transmitter Power 10 mW -
CONNECTIONS Sennheiser CX 400BT Shure AONIC 215 True Wireless
Connector Type - 2 x headphones (MMCX)
OTHERS Sennheiser CX 400BT Shure AONIC 215 True Wireless
Included Accessories 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) USB charging cable, 3 pairs of ear tips (small, medium, large), charging case, 3 pairs of foam ear tips (small, medium, large)
Compatibility - iPhone, iPad, Android phone
Compliant Standards Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU -
Service & Support - Limited warranty - 2 years
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