Sennheiser HD660S2 Heaphones (HD660S2)

• Uniquely strong, vented magnet system for minimal distortion
• Extremely lightweight aluminium voice coil with 300 ohm impedance for excellent impulse response
• 300 mm high density 300 mm high-calibre aluminium alloy
• Plush ear cushions and open design for maximum comfort
• High quality - designed in Germany, manufactured in Ireland

Technical specifications:

• Sensitivity 104 dB
• Headphone design Ear surround
• Headphone type Hi-Fi
• Minimum frequency 8Hz
• Maximum frequency 41500Hz
• System Open
• No control
• Impedance 300 Ohm
• Weight (without packaging) 0.26 kg
• Cable length 180cm