Sony MDR-7 specifications

Brand: Sony

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• Type: dynamic headphone
• Drive units:
• Impedance: 55Ω
• Frequency Response: 16Hz to 22kHz
• Input: 100mW (max)
• Maximum SPL:
• Distortion:
• Cord length: 3000mm
• Weight: 55g
• Price:
• Year: 1981