◆ The SE535 Special Edition features a high-frequency single tweeter and a low-frequency dual woofer's high precision triple MicroDriver to provide a very magnificent sound with rich low frequency. ◆ Sensitivity: 119 dB SPL / mW / ◆ Impedance: 36 Ω / ◆ Playback Frequency Band: 18 Hz ~ 19 kHz / ◆ Noise Attenuation: 37 dB (Maximum).