In depth comparison and review of Sony MDR ZX330BT and Koss UR 23i. 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 | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Product Type | Headphones - Bluetooth - wireless - NFC | Headphones - wired - 3.5 mm jack | |
|---|---|---|---|
| Weight | 150 g | - | |
| Colour | - | White | Black | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Headphones Form Factor | On-ear | Full size | |
|---|---|---|---|
| Headphones Technology | Dynamic | - | |
| Ear Cups Type | Closed | - | |
| Foldable | Yes | - | Sony MDR ZX330BT can be folded. |
| Connectivity Technology | Wireless | Wired | |
| Wireless Technology | Bluetooth | - | |
| Bluetooth Version | Bluetooth 3.0 | - | |
| Bluetooth Profiles | Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP), Low Complexity Subband Coding (SBC) | - | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | - | 94 dB | |
| Impedance | - | 34 Ohm | |
| Diaphragm | 30 mm | - |
| MICROPHONE | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Form Factor | Built-in | - | |
|---|---|---|---|
| Type | - | On-cable | |
| Microphone Technology | Electret condenser | - | |
| Microphone Operation Mode | Stereo | - | |
| Frequency Response | 100 - 4000 Hz | - | |
| Audio Input Details | Omni-directional - 100 - 4000 Hz | - |
| CABLE | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Cable Type | Micro-USB charge cable - 50 cm | Headphones cable - 1.22 m |
|---|
| BATTERY AND CHARGING | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | - | |
|---|---|---|---|
| Battery Life | 30 hours | - | |
| Standby Time | 300 hours | - | |
| Charging Time | 4 hours | - |
| WIRELESS LINK | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Transmission Range | 10 m | - | |
|---|---|---|---|
| Modulation Type | FHSS | - | |
| Radio Frequency Range | 2.4 - 2.4835GHz | - |
| CONNECTIONS | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Connector Type | Bluetooth | Headphones (mini-phone stereo 3.5 mm 4-pole) |
|---|
| OTHERS | Sony MDR ZX330BT | Koss UR 23i |
|---|
| Service & Support | - | Limited warranty - lifetime |
|---|
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