"Eighteensound HD1050, 1"" Ferrite driver, Power rating: 50 watts AES over 1.6 kHz, Impedance: 8 ohms, SPL (sound pressure level): 107 dB SPL 1W / 1M, Frequency range: 1600 - 20,000 Hz, 44.4 mm titanium diaphragm, Weight: 1.8 kg"
