Alctron HP280
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Alctron Audio HP-280 Professional Monitor Headphone
System/Design : Dynamic/circumaural,
Closed back Audio Bandwindth (Hz): 16-28,000
Efficiency (Db SPL/V) : 91
Maximum input Power (mW) : 200
Impedance (ohms) : 55
Weight : 240/8.5
Cable (m/ft) : 3/10 (plugon,99.99% OFC single Cable)
Screw-on Stereo adapter (mm/inch) : 3.5/6.3/1/8"to 1/4"