In depth comparison and review of JVC HA FX39BT Marshmallow and Devialet Gemini. 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 | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Product Type | Earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 28 g | - | |
| Dimensions & Weight Details | - | Charging case: 5.8 cm x 7.4 cm x 3.1 cm / 76 g Earbud: 1.8 cm x 3.3 cm x 1.5 cm / 8 g |
|
| Colour | Green | White | Black | Matte black | |
| Protection | - | Splashproof, IPX4, dust-proof | |
| Recommended Use | Portable electronics | Portable electronics |
| SOUND QUALITY | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Headphones Form Factor | In-ear - behind-the-neck mount | In-ear | |
|---|---|---|---|
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 3.0 | Bluetooth 5.0 | Devialet Gemini have a more advanced version of Bluetooth than JVC HA FX39BT Marshmallow. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | - | |
| Bluetooth Audio Codec | SBC | aptX | |
| Active Noise Cancelling | - | Yes | Devialet Gemini are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | - | Internal Delay Compensation technology | |
| Noise Isolating | Yes | - | JVC HA FX39BT Marshmallow are equipped with a noise isolating function. |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 5 - 20000 Hz | Devialet Gemini offer a larger frequency range than JVC HA FX39BT Marshmallow. |
| Total Harmonic Distortion (THD) | - | <0.1% | |
| Diaphragm | 8.5 mm | 10 mm | Devialet Gemini have a thicker diaphragm than JVC HA FX39BT Marshmallow. |
| Magnet Material | Neodymium | - | |
| Features | - | Ear Active Matching, Pressure Balance Architecture |
| MICROPHONE | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Form Factor | Built-in | Built-in |
|---|
| REMOTE CONTROL | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Controls | Volume control, play/pause, next/previous track | Play/pause, voice assistant, ANC/ambient |
|---|
| CABLE | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Cable Type | USB charge cable | Charging cable - detachable |
|---|
| FEATURES | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Features | - | Touch control | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Assistant |
| BATTERY AND CHARGING | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | 14 hour(s) | 6 hour(s) | JVC HA FX39BT Marshmallow lasts longer on a single charge than the Devialet Gemini. |
| Battery Life Details | - | Continuous playback (noise cancelling ON): up to 6 hours Continuous talk: up to 4 hours Continuous talk (noise cancelling OFF): up to 4.5 hours Continuous playback (with included charging case): up to 24 hours |
|
| Charging Time | 3 hour(s) | 1.5 hour(s) | Devialet Gemini recharge faster than JVC HA FX39BT Marshmallow. |
| CONNECTIONS | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Connector Type | Bluetooth USB |
- |
|---|
| OTHERS | JVC HA FX39BT Marshmallow | Devialet Gemini |
|---|
| Included Accessories | 2 pairs of ear tips (small, medium) | Charging case, charging cable, 4 pairs of ear tips (XS, small, medium, large) | |
|---|---|---|---|
| Compatibility | iPhone, iPad, iPod, Android phone | - | |
| Compliant Standards | - | IPX4 |
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