Koss Pro4S Studio Over-ear Headphones, Black

The Koss Pro4S Studio Headphones are engineered for professional audio monitoring and creative work. They feature the SLX40 element, which is tuned to provide a neutral and accurate sound reproduction for reference applications. The closed-back, over-ear design offers passive sound isolation, a critical feature in a studio environment. For a more ergonomic fit during long sessions, the headphones incorporate a D-profile earcup shape that mirrors the natural contour of the human ear.

The construction combines durable aluminum earcups with memory foam cushions covered in protein leather, a material choice that balances robustness with user comfort. A detachable 1.4-meter coiled cord provides operational flexibility and durability for daily studio use. The cable can be connected to either the left or right earcup via the dual-choice entry system, which also allows for pass-through listening. For transport between locations, the Pro4S has a collapsible design that fits into the included rigid carrying case.

• Over-ear headphones with a closed-back acoustic design
• Wired connection via a detachable 1.4 m coiled cable
• Features a frequency response of 10–25,000 Hz
• Constructed with aluminum earcups and memory foam cushions
• Dual-choice entry allows cable connection to either earcup
• Foldable frame for compact storage and transport
• Includes a protective carrying case and 6.3 mm adapter