Modena [+sped] - Cuffie Sennheiser HD515

Ciao a tutti,
causa inutilizzo vendo le cuffie in oggetto a 50 euro + spese di spedizione. Ecco qui alcune specifiche:

Nominal impedance 50 Ω
Contact pressure 3,5 N
Weight w/o cable 255 g
Jack plug 6,3 mm stereo (3,5 mm Adapter)
Transducer principle (Headphones) open, dynamic
Ear coupling circumaural
Cable length 3 m detachable single-sided OFC copper cable
Frequency response (headphones) 14 - 26000 Hz
Sound pressure level (SPL) 108 dB
THD, total harmonic distortion < 0,2 %