In depth comparison and review of Sennheiser CX True Wireless and KEF Mu3. 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 True Wireless | KEF Mu3 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Dimensions & Weight Details | Earbud: 6 g Charging case: 5.9 cm x 4.23 cm x 3.38 cm / 37 g |
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 |
|
| Colour | Black | White | Silver grey | |
| Protection | Splashproof, IPX4 | Splashproof | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.2 | Bluetooth 5.0 | Sennheiser CX True Wireless have a more advanced version of Bluetooth than KEF Mu3. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC | |
| Active Noise Cancelling | - | Yes | KEF Mu3 are equipped with active noice cancellation. |
| Noise Isolating | Yes | - | Sennheiser CX True Wireless are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | Bass Boost | - | |
| Frequency Response | 5 - 21000 Hz | 20 - 20000 Hz | Sennheiser CX True Wireless offer a larger frequency range than KEF Mu3. |
| Max Input Power | - | 5 mW | |
| Total Harmonic Distortion (THD) | <0.08% | - | |
| Sensitivity | 110 dB | 104 dB/mW | Sennheiser CX True Wireless have higher sensitivity than KEF Mu3. |
| Impedance | 16 Ohm | 16 Ohm | |
| Max Sound Pressure | 110 dB | - | |
| Diaphragm | 7 mm | 8.2 mm | KEF Mu3 have a thicker diaphragm than Sennheiser CX True Wireless. |
| Simultaneously Connectable Devices Qty (Multipoint) | 1 | - | |
| Features | TrueResponse technology | - |
| MICROPHONE | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Frequency Response | 100 - 10000 Hz | - | |
| Microphones Included | 4 | - |
| REMOTE CONTROL | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Controls | - | Multiple function button |
|---|
| CABLE | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Cable Type | USB-C charge cable - detachable - 25 cm | - |
|---|
| FEATURES | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Features | Touch control | - | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | Yes | - | |
| Voice Control | Indirect | - | |
| Intelligent Assistant | Siri, Google Assistant | - |
| BATTERY AND CHARGING | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 60 mAh | 50 mAh | Sennheiser CX True Wireless have a higher battery capacity than KEF Mu3. |
| Battery Life | 9 hour(s) | 9 hour(s) | Both headphones last the same amount of time on a single charge. |
| Battery Life Details | Continuous playback (50% volume): up to 9 hours Continuous playback (with included charging case): up to 27 hours |
Continuous playback (noise cancelling ON): up to 9 hours Continuous playback (with included charging case): up to 24 hours |
|
| Charging Time | 1.5 hour(s) | - | |
| Included Qty | 2 | 2 |
| OTHERS | Sennheiser CX True Wireless | KEF Mu3 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (400 mAh) | 4 pairs of silicone ear tips, USB-C charging cable, charging case (350 mAh) | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1 | IPX5 |
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