Description

The Koss PRO4AA are professional full-size closed headphones, historically used in broadcast and recording applications for isolation and accurate reproduction across the entire audio spectrum. The dynamic, closed-back design provides external noise reduction, while the coiled cable and wide impedance make them suitable for high-output sources and professional audio interfaces.

Key Features

• Closed over-ear headphones for monitoring and professional studio/broadcast use.
• Dynamic drivers with 10 Hz – 25 kHz response for extended spectrum coverage.
• 250 Ω impedance and 95 dB SPL sensitivity suitable for variable power sources.
• 8 ft coiled cable with single entry, 6.3 mm jack for professional connectivity
• Robust headband with padding and effective acoustic isolation.

The Koss PRO4AA headphones are a benchmark among studio headphones for radio and recording, meeting the rigorous requirements of broadcast and recording professionals who need reliable equipment and superior performance. Their full-size dimensions isolate from unwanted noise while retaining every sound detail, offering accurate reproduction, intensity, and the feeling of a live performance in every recording. Connecting to your music has never been so realistic and engaging.

Recommended Applications

Designed for critical monitoring, recording, broadcast, audio editing, and studio applications, the PRO4AA offer superior isolation and stable performance with professional and amplified sources.

PRO4AA Technical Specifications

• Type: Dynamic closed-back, over-ear headphones
• Frequency Response: 10 Hz – 25 kHz
• Impedance: 250 Ω
• Sensitivity: 95 dB SPL/1 mW
• Cable: 8 ft (~2.4 m) coiled
• Connector: 6.3 mm Jack