Precision Acoustic Resistor manages air compression of the rear chamber for the smoother diaghram movement.

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  • Newly designed Deep Mount earpiece. Its' unique shape provide tight fit to the ear canals providing a rich bass reproduction.
  • Adjustable port enable ear chip to fit more appropriately to the ear canals which varies by individuals.
  • Ring less Diaphragm bonding increased effective area of the diaphragm by bonding it directly to the driver edge.More air motion for the rich sound.

Main Features

Pure Standard Series in-ear headphones HP-NEF21
カラー 品番 JANコード
Black 品番HP-NEF21K
Red 品番HP-NEF21R
Silver 品番HP-NEF21S JANコード4531465037066
Driver Type Dynamic
Driver Size Φ10.4mm
Output Sound Pressure Level 98dB/1mW
Frequency Range 7Hz ~ 24000Hz
Max. Input 150mW
Impedance 18Ω
Connector Φ3.5mm gold plated stereo mini plug
Cable Length Approx. 120cm (Y Type)
Weight Approx. 14g (includes cable)


■3 sets of ear caps (XS/S/M)
 ■User's Manual/Warranty