SOUNDXTREME 7 Band Passive Stereo Graphic Equalizer with Fader Control ST-EQ-180 Featuring: Adjust gain Control / Output level Display/ EQ Slide Control / Subwoofer Xover Points / Subwoofer Switch Specification: EQ Center Frequencies: 60, 150, 400, 1K, 2.5K, 6K and 15Khz / Equalization Range: +/- 12dB Input Impedance: 100 Ohm / Input Sensitivity: 4 Volts for 500mV out Frequency Response: 20hz to 20kHz +/- dB / Crossover Rolloff: 12dB/Octave / Power Requirement: 11-16V DC