Sony MDR-4L1 specifications

Brand: Sony

• Type: dynamic headphone
• Drive units: 23mm
• Impedance: 32Ω
• Frequency Response: 20Hz to 22kHz
• Input: 40mW (max)
• Maximum SPL:
• Distortion:
• Cord length: 1200mm
• Weight: 28g
• Price:
• Year: 1981