Detailed comparison and review of JVC HA FX21BT and KEF Mu3. 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 | JVC HA FX21BT | KEF Mu3 |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 11 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 |
|
| Colour | Black | White | Silver grey | |
| Protection | Splashproof, sweat-resistant | Splashproof | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | JVC HA FX21BT | KEF Mu3 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 4.1 | Bluetooth 5.0 | KEF Mu3 have a more advanced version of Bluetooth than JVC HA FX21BT. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC | SBC, AAC | |
| Active Noise Cancelling | - | Yes | KEF Mu3 are equipped with active noice cancellation. |
| Sound Output Mode | - | Stereo | |
| 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 | 8.2 mm | 8.2 mm | Both headphones are designed with same thick diaphragm. |
| Magnet Material | Neodymium | - | |
| In-Cord Volume Control | Yes | - |
| MICROPHONE | JVC HA FX21BT | KEF Mu3 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - |
| REMOTE CONTROL | JVC HA FX21BT | KEF Mu3 |
|---|
| Controls | Power on/off, volume control, 3-button remote | Multiple function button |
|---|
| CABLE | JVC HA FX21BT | KEF Mu3 |
|---|
| Cable Type | USB charge cable | - |
|---|
| BATTERY AND CHARGING | JVC HA FX21BT | KEF Mu3 |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 50 mAh | |
| Battery Life | 5 hour(s) | 9 hour(s) | KEF Mu3 lasts longer on a single charge than the JVC HA FX21BT. |
| Battery Life Details | - | Continuous playback (noise cancelling ON): up to 9 hours Continuous playback (with included charging case): up to 24 hours |
|
| Charging Time | 2.5 hour(s) | - | |
| Included Qty | - | 2 |
| CONNECTIONS | JVC HA FX21BT | KEF Mu3 |
|---|
| Connector Type | USB (power only) | - |
|---|
| OTHERS | JVC HA FX21BT | KEF Mu3 |
|---|
| Included Accessories | 2 pairs of low rebound earpieces (small, medium) | 4 pairs of silicone ear tips, USB-C charging cable, charging case (350 mAh) | |
|---|---|---|---|
| Compliant Standards | - | IPX5 |
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