B-Stock, Sennheiser IE 400 Pro SBK, dynamic In-Ear-Monitoring headphones, impedance 16 Ohm, total harmonic distortion: 1kHZ < 0,08%, frequency reponse 6 - 19.000 Hz, attenuation 26 dB, sound pressure level 1 kHz 123 dB (1kHz / 1 Vrms), transducer...
