Side by side comparison and review of Sony WI-XB400 and KEF Mu3. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
DESIGN AND DIMENSIONS | Sony WI-XB400 | KEF Mu3 |
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Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
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Weight | 21 g | - | |
Dimensions & Weight Details | - | Earbud: 1.75 cm x 2.63 cm x 2.45 cm / 5.8 g Charging case: 6.2 cm x 5.2 cm x 3.35 cm / 46.8 g |
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Colour | Black | Blue | Silver grey | |
Protection | - | Splashproof | |
Recommended Use | Portable electronics | Portable electronics | |
Bluetooth Range (Operating Distance) | 10 m | 10 m | The maximum operating distance of both headphones is the same. |
SOUND QUALITY | Sony WI-XB400 | KEF Mu3 |
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Headphones Form Factor | In-ear - behind-the-neck mount | In-ear | |
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Headphones Technology | Dynamic | - | |
Connectivity Technology | Wireless | Wireless | |
Wireless Technology | Bluetooth | Bluetooth | |
Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | Both headphones have the same Bluetooth version. |
Bluetooth Profiles | Hands-Free Profile (HFP), 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 | SBC, AAC | |
Active Noise Cancelling | - | Yes | KEF Mu3 are equipped with active noice cancellation. |
Sound Output Mode | - | Stereo | |
Sound Effects | Extra Bass | - | |
Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
Max Input Power | - | 5 mW | |
Sensitivity | - | 104 dB/mW | |
Impedance | - | 16 Ohm | |
Diaphragm | 12 mm | 8.2 mm | Sony WI-XB400 have a thicker diaphragm than KEF Mu3. |
Magnet Material | Neodymium | - | |
Features | Magnetic ear buds | - |
MICROPHONE | Sony WI-XB400 | KEF Mu3 |
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Form Factor | - | Built-in | |
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Type | On-cable | - | |
Microphone Technology | Electret condenser | - | |
Microphone Operation Mode | Uni-directional | - |
REMOTE CONTROL | Sony WI-XB400 | KEF Mu3 |
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Controls | Multiple function button | Multiple function button |
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CABLE | Sony WI-XB400 | KEF Mu3 |
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Cable Type | USB-C charge cable - detachable - 20 cm | - |
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FEATURES | Sony WI-XB400 | KEF Mu3 |
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Intelligent Assistant | Siri, Google Assistant | - |
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BATTERY AND CHARGING | Sony WI-XB400 | KEF Mu3 |
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Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
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Battery Capacity | - | 50 mAh | |
Battery Life | 15 hour(s) | 9 hour(s) | Sony WI-XB400 lasts longer on a single charge than the KEF Mu3. |
Battery Life Details | - | Continuous playback (noise cancelling ON): up to 9 hours Continuous playback (with included charging case): up to 24 hours |
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Standby Time | 200 hours | - | |
Charging Time | 3 hour(s) | - | |
Included Qty | - | 2 |
CONNECTIONS | Sony WI-XB400 | KEF Mu3 |
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Connector Type | USB (power only) (USB Type-C) | - |
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OTHERS | Sony WI-XB400 | KEF Mu3 |
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Included Accessories | Ear-buds | 4 pairs of silicone ear tips, USB-C charging cable, charging case (350 mAh) | |
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Compliant Standards | - | IPX5 |