HIFI 40MM 32 OHM Headphone Speaker Unit Titanium Film High Magnetic Full Range Headset Speaker .
Compatible With:For AKG K480 K99 K55 K420 K430 K450 K72 Y500 K92 K44 K77 Headphone DIY Replacement Speaker Driver Unite
Impedance : 32 OHM .
Rated power : 0.5W .
Frequency response : 20-20000 kHz .
Sensitivity : 111 (dB/W) .
Harmonic distortion : 2 (TMD%) .
Frequency characteristics: full frequency band (full range).
Diaphragm: Titanium Film .
Uses: headphone sound unit DIY .
Directivity :Red dot is positive .