Sennheiser HE 1 - Specifications; Headphones and Amplifier Specs

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Specications
Specifications
HE 1-HP headphones
Transducer principle electrostatic, push-pull principle
Acoustic operating principle open
Ear coupling circum-aural
Contact pressure 4.3 N ± 0.3 N
Frequency characteristic diffuse eld equalized
Frequency response 8 – 80,000 Hz (-3 dB)
4 – 100,000 Hz (-10 dB)
Max. sound pressure level 114 dB SPL
THD < 0.01 % (1 kHz, 100 dB SPL)
Connection cable silver-plated, oxygen-free copper cable
(OFC), balanced, shielded, PTFE insulated,
3 m
Connector 9-pin HV connector
Operating voltage 780 V DC
Polarization voltage 650 V
Max. input level 20 dBV
Weight (without cable) approx. 550 g
Temperature range operation: +10 °C to +40 °C
storage: -20 °C to +70 °C
Relative air humidity
(non-condensing)
operation: 20 to 85 %,
storage : 10 to 95 %