Detailed comparison and review of Koss UR 23i and JVC HA S31BT. 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 | Koss UR 23i | JVC HA S31BT |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 158 g | |
| Colour | White | Black | - | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Koss UR 23i | JVC HA S31BT |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| 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 | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | 32 Ohm | |
| Diaphragm | - | 30.7 mm | |
| Magnet Material | - | Ferrite |
| MICROPHONE | Koss UR 23i | JVC HA S31BT |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - |
| REMOTE CONTROL | Koss UR 23i | JVC HA S31BT |
|---|
| Controls | - | 4-button remote |
|---|
| CABLE | Koss UR 23i | JVC HA S31BT |
|---|
| Cable Type | Headphones cable - 1.22 m | USB charge cable - detachable |
|---|
| BATTERY AND CHARGING | Koss UR 23i | JVC HA S31BT |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 17 hour(s) | |
| Charging Time | - | 3 hour(s) |
| CONNECTIONS | Koss UR 23i | JVC HA S31BT |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | USB (power only) (micro-USB) |
|---|
| OTHERS | Koss UR 23i | JVC HA S31BT |
|---|
| Service & Support | Limited warranty - lifetime | - |
|---|
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