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http://www.gmb.nl/item.aspx?id=7724
Interface: USB 3.0/2.0/1.1 compatible
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Sensitivity (at 1KHz) : 105 +/-3 dB
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Impedance : 32 Ohm +/-15%
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Speakers: 30 mm diameter, 16u mylar
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Frequency response: 130 - 20000 Hz
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Input power: 40 mW nominally, up to 100 mW max
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Distortions: < 3 % at 1KHz 40mW
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Microphone: condenser omni-directional; sensitivity:-58 ± 3 dB(0 dB=1V/uBar at 1KHz), -38dB (0 dB=1V/Pa at 1KHz)
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Net weight: 0.2 kg
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Cord length: 2 m
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