Get total control over the sound of your system with the DB Drive SPEQ Speed Series 5-Band totally adjustable parametric equalizer. 
Specs:
  5 Band Adjustable Parametric Equalization (45Hz, 100Hz, 700Hz, 2kHz, 15kHz)
Variable Subwoofer Output Control
Main AUX Input Selector
Left and Right AUX Input Sensitivity Controls
Gold Plated RCA Input Connectors
  Selectable Subwoofer Crossover: 60Hz – 90Hz
Output Level: 8 Volts