Specification Sheet

Luxury metal cap not to insert any hair
when adjusting the headband.
Good looking head face with glossy
decoration cover
Experienced microphone design
for excellent Noise cancellation
The flexible T-bar design releases the
user’s fatigues from all day wearing
Technical Specification
<Receiver unit>
Impedance: 150 Ω ±15% at 1kV
Sensitivity(SPL) : 103dB±3dB at 100mV
Frequency Range : 100hz~10kHZ
<Microphone>
Directional Characteristic: Bi-directional (=Noise Canceling)
Sensitivity: -47±4dB (0db=1V.Pa, 1KHz) , RL=2.2㏀, Vcc=2.0V.
Impedance: Less than 2.2㏀ at 1kHz
The Universal QD allows you to connect any bottom cable to the headset enabling you to set the
compatibility for your telephone.
IPH-250/255 SERIES