Koss PRO4AA
Koss Pro4AA headphones set the standard for full size professional headphones.
| Brand | Koss |
| Model | PRO4AA |
| Driver size (mm) | |
| Noise cancelling | |
| Frequency response | |
| Impedance (Ω) | |
| Battery life (hours) | |
| Bluetooth version | |
| Dust protection (IP code) | |
| Water protection (IP code) | |
| Bluetooth | |
| Height (mm) | |
| Width (mm) | |
| Depth (mm) | |
| Weight (kg) |