Sennheiser HDA300 specifications

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Specification Value
Connector 2 Mono-Jacks; Green: -L, yellow: +L, red: +R, blue: -R
Frequency response (Headphones) 20 Hz - 20,000 Hz
Characteristic SPL 117dB at 1kHz, 0.5V
Contact pressure 8.8N ± 0.5N
Ear coupling circumaural
Connection cable approx. 2.2m
Transducer principle dynamic, closed
Weight incl. cable: 490 g
Nominal impedance 23 Ohm
Load rating 500 mW
Max. Input voltage 3.5 V, < 10 min