Whats in the box: (1) 7 Band Digital Equalizer AB 7BVEQ. Pre Graphic Frequency: 50hz, 125hz, 315hz, 750hz, 2.2khz, 6khz, 12khz. Equalization Range: +- 12db. Subwoofer Frequency: 30hz-300hz. Input Impedance: 15k Ohms.
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