Detailed comparison and review of Koss UR 23i and Sony WH-CH520. 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 | Sony WH-CH520 |
|---|
| Product Type | Headphones - wired - 3.5 mm jack | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | - | 147 g | |
| Colour | White | Black | Beige | Black | Blue | White | |
| Body Material | - | Recycled plastic | |
| Recommended Use | Portable electronics | Portable electronics | |
| Bluetooth Range (Operating Distance) | - | 10 m |
| SOUND QUALITY | Koss UR 23i | Sony WH-CH520 |
|---|
| Headphones Form Factor | Full size | On-ear | |
|---|---|---|---|
| Ear Cups Type | - | Closed | |
| Adjustable Headband | - | Yes | |
| Connectivity Technology | Wired | Wireless | |
| Wireless Technology | - | Bluetooth | |
| Bluetooth Version | - | Bluetooth 5.2 | |
| Bluetooth Profiles | - | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | - | SBC, AAC | |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Digital Sound Enhancement Engine (DSEE), 360 Reality Audio | |
| Frequency Response | 20 - 20000 Hz | 20 - 20000 Hz | Both headphones offer the same frequency response. |
| Sensitivity | 94 dB | - | |
| Impedance | 34 Ohm | - | |
| Diaphragm | - | 30 mm | |
| Simultaneously Connectable Devices Qty (Multipoint) | - | 2 | Sony WH-CH520 have the ability to connect to multiple devices simultaneously. |
| Features | - | MultiPoint Technology, Google Fast Pair, Microsoft Swift Pair |
| MICROPHONE | Koss UR 23i | Sony WH-CH520 |
|---|
| Form Factor | - | Built-in | |
|---|---|---|---|
| Type | On-cable | - |
| REMOTE CONTROL | Koss UR 23i | Sony WH-CH520 |
|---|
| Controls | - | Volume, play/pause, skip track |
|---|
| CABLE | Koss UR 23i | Sony WH-CH520 |
|---|
| Cable Type | Headphones cable - 1.22 m | USB-C charge cable |
|---|
| FEATURES | Koss UR 23i | Sony WH-CH520 |
|---|
| Internet of Things (IoT) Compatible | - | Yes | |
|---|---|---|---|
| Voice Control | - | Direct | |
| Intelligent Assistant | - | Siri, Google Assistant |
| BATTERY AND CHARGING | Koss UR 23i | Sony WH-CH520 |
|---|
| Battery Type | - | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Life | - | 50 hour(s) | |
| Battery Life Details | - | Continuous playback: up to 50 hours Continuous talk: up to 40 hours |
|
| Standby Time | - | 200 hours | |
| Charging Time | - | 3 hour(s) |
| CONNECTIONS | Koss UR 23i | Sony WH-CH520 |
|---|
| Connector Type | Headphones (mini-phone stereo 3.5 mm 4-pole) | USB (power only) (USB Type-C) Bluetooth |
|---|
| OTHERS | Koss UR 23i | Sony WH-CH520 |
|---|
| Service & Support | Limited warranty - lifetime | - |
|---|
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