These pro4/aa headphones were introduced in 1970s are recognized as the first dynamic headphones to achieve a full frequency range. Closed-back around the ear design for high noise isolation. Features a heavyduty 8 foot coiled cable. They are known for being quite heavy, weighing approximately 22.6 ounces. A classic studio headphone perfect for collectors! Works great, normal wear, no rips. Please see pictures for more details!
| Brand | Koss |
| Form Factor | Headband |
| Type | Ear-Cup (Over the Ear) |
| Number Of Earpieces | Double |
| Color | Green/Beige |
| Model | Pro4AA |
| Connectivity | 6.35 mm (1/4 in) |
| MPN | PRO/4AA |
The ear-cup design is easy to take on trips, and you will find that it still feels cozy.