Features 2 Channel Digital Bass Restoration Parametric Bass Equalization Variable Center Frequency Control Selectable Balanced/ Nonbalanced RCA inputs Selectable Ground Isolation Switch Selectable Bass Output Control PWM Power Supply Selectable PFM Subsonic Filter Switch Selectable Balanced/ Nonbalanced RCA inputs Dash Subsonic Control Dash Mount Remote Control Included Specifications Maximum RCA Input Level: 13V RMS Maximum RCA Output Level: 12V Peak Frequency Response: 10Hz - 100KHz ; +/- 1dB