Detailed comparison and review of Sennheiser CX 400BT and Sennheiser CX Plus. With our comprehensive overview, you can simply compare design, sound quality, but also other key features of both headphones and easily decide which ones are the right choice for you. Our goal is to help you identify the main differences between products and find the headphones that best fit your needs and expectations.
DESIGN AND DIMENSIONS | Sennheiser CX 400BT | Sennheiser CX Plus |
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Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
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Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earbud: 5.9 cm x 3.38 cm x 4.23 cm / 6 g Charging case: 35 g |
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Colour | White | Black | White | Black | |
Protection | - | Splashproof, IPX4 | |
Recommended Use | Portable electronics | Portable electronics |
SOUND QUALITY | Sennheiser CX 400BT | Sennheiser CX Plus |
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Headphones Form Factor | In-ear | In-ear | |
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Headphones Technology | Dynamic | Dynamic | |
Connectivity Technology | Wireless | Wireless | |
Wireless Technology | Bluetooth | Bluetooth | |
Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.2 | Sennheiser CX Plus have a more advanced version of Bluetooth than Sennheiser CX 400BT. |
Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC, aptX, aptX Adaptive | |
Active Noise Cancelling | - | Yes | Sennheiser CX Plus are equipped with active noice cancellation. |
Sound Output Mode | Stereo | Stereo | |
Sound Effects | - | Bass Boost | |
Frequency Response | 5 - 21000 Hz | 5 - 21000 Hz | Both headphones offer the same frequency response. |
Total Harmonic Distortion (THD) | 0.08% | - | |
Max Sound Pressure | 107 dB | - | |
Diaphragm | 7 mm | 7 mm | Both headphones are designed with same thick diaphragm. |
Simultaneously Connectable Devices Qty (Multipoint) | - | 1 | |
Features | - | TrueResponse technology |
MICROPHONE | Sennheiser CX 400BT | Sennheiser CX Plus |
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Form Factor | Built-in | Built-in | |
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Frequency Response | - | 100 - 10000 Hz | |
Microphones Included | - | 4 |
REMOTE CONTROL | Sennheiser CX 400BT | Sennheiser CX Plus |
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Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | - |
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CABLE | Sennheiser CX 400BT | Sennheiser CX Plus |
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Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | USB-C charge cable - detachable |
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FEATURES | Sennheiser CX 400BT | Sennheiser CX Plus |
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Features | Voice alerts, touch control | Touch control | |
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Internet of Things (IoT) Compatible | - | Yes | |
Intelligent Assistant | Siri, Google Assistant | Siri, Google Assistant |
BATTERY AND CHARGING | Sennheiser CX 400BT | Sennheiser CX Plus |
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Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
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Battery Capacity | 55 mAh | 55 mAh | Both headphones are designed with the same battery capacity. |
Battery Life | 7 hour(s) | - | |
Battery Life Details | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
Continuous playback (with included charging case): up to 24 hours | |
Charging Time | 1.5 hour(s) | 1.5 hour(s) | The charging of both headphones last the same time. |
Included Qty | 2 | 2 |
WIRELESS LINK | Sennheiser CX 400BT | Sennheiser CX Plus |
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Radio Transmitter Power | 10 mW | - |
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OTHERS | Sennheiser CX 400BT | Sennheiser CX Plus |
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Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | |
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Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | - | |
Service & Support | - | Limited warranty - 2 years |