In depth comparison and review of Sennheiser CX 400BT and Sony WF-1000XM4. 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.
| DESIGN AND DIMENSIONS | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 41 g | |
| Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earphone: 7.3 g | |
| Colour | White | Black | Black | Silver | |
| Earpad Material | - | Polyurethane foam | |
| Protection | - | Water-resistant | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.2 | Sony WF-1000XM4 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) | Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Serial Copy Management System (SCMS-T) | |
| Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC, LDAC | |
| Active Noise Cancelling | - | Yes | Sony WF-1000XM4 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Digital Noise Cancelling technology (DNC) | |
| Sound Output Mode | Stereo | - | |
| Sound Effects | - | Digital Sound Enhancement Engine Extreme (DSEE Extreme), Ambient Sound Mode, Adaptive Sound Control, 360 Reality Audio | |
| Frequency Response | 5 - 21000 Hz | 20 - 20000 Hz | Sennheiser CX 400BT offer a larger frequency range than Sony WF-1000XM4. |
| Total Harmonic Distortion (THD) | 0.08% | - | |
| Max Sound Pressure | 107 dB | - | |
| Diaphragm | 7 mm | 6 mm | Sennheiser CX 400BT have a thicker diaphragm than Sony WF-1000XM4. |
| Magnet Material | - | Neodymium | |
| Features | - | Precise Voice Pickup Technology, Quick Attention function, Microsoft Swift Pair, Processor V1, Automatic Wind Noise Reduction, Speak-to-Chat |
| MICROPHONE | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | - | Omni-directional | |
| Microphones Included | - | 2 |
| REMOTE CONTROL | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | Tap control |
|---|
| CABLE | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | USB-C charge cable - detachable |
|---|
| FEATURES | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Features | Voice alerts, touch control | - | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | - | Yes | |
| Intelligent Assistant | Siri, Google Assistant | Google Assistant, Alexa | |
| Sensors | - | Proximity sensor, bone sensor |
| BATTERY AND CHARGING | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - wireless charging | |
|---|---|---|---|
| Battery Capacity | 55 mAh | - | |
| Battery Life | 7 hour(s) | 12 hour(s) | Sony WF-1000XM4 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 (noise cancelling OFF): up to 12 hours Continuous playback (noise cancelling ON): up to 8 hours Continuous talk (noise cancelling OFF): up to 6 hours Continuous talk (noise cancelling ON): up to 5.5 hours |
|
| Wireless Charging Standards | - | Qi | |
| Charging Time | 1.5 hour(s) | 1.5 hour(s) | The charging of both headphones last the same time. |
| Included Qty | 2 | - |
| WIRELESS LINK | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Radio Transmitter Power | 10 mW | - |
|---|
| CONNECTIONS | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Connector Type | - | Bluetooth USB (power only) (USB Type-C) |
|---|
| OTHERS | Sennheiser CX 400BT | Sony WF-1000XM4 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | USB-C to USB-A cable, 3 sizes of noise isolation earbud tips | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | IPX4 |
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