In depth comparison and review of JVC TINYPHONES HA-KD7 and JVC HA S31BT. 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 TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 110 g | 158 g | JVC TINYPHONES HA-KD7 are lighter than JVC TINYPHONES HA-KD7 headphones. |
| Design | Kids | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Adjustable Headband | Yes | - | |
| Foldable | - | Yes | JVC HA S31BT can be folded. |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 4.1 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC | |
| Sound Output Mode | Stereo | - | |
| Sound Effects | - | Dynamic Bass Boost (DBB) | |
| Frequency Response | 15 - 23000 Hz | 20 - 20000 Hz | JVC TINYPHONES HA-KD7 offer a larger frequency range than JVC HA S31BT. |
| Max Input Power | 200 mW | - | |
| Sensitivity | 85 dB/mW | - | |
| Impedance | - | 32 Ohm | |
| Diaphragm | 30 mm | 30.7 mm | JVC HA S31BT have a thicker diaphragm than JVC TINYPHONES HA-KD7. |
| Magnet Material | Ferrite | Ferrite |
| MICROPHONE | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Form Factor | - | Built-in |
|---|
| REMOTE CONTROL | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Controls | - | 4-button remote |
|---|
| CABLE | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Cable Type | Headphones cable - 0.8 m | USB charge cable - detachable | |
|---|---|---|---|
| Cable Length | 0.8 m | - | |
| Plated Connector | Nickel | - |
| BATTERY AND CHARGING | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 17 hour(s) | |
| Charging Time | - | 3 hour(s) |
| CONNECTIONS | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm) | USB (power only) (micro-USB) |
|---|
| OTHERS | JVC TINYPHONES HA-KD7 | JVC HA S31BT |
|---|
| Included Accessories | Decorative stickers | - |
|---|
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