4 Band Parametric EQ with +/- 18dB Boost/Cut; Active Grain Pre-Amplifiers with adjustable Input Sensitivity; Master Volume/Fader Control; Subwoofer level control; Subwoofer frequency adjustable; 7V RMS RCA line out; Individual left and right sensitivity controls; Specific bandwidth for each band plus High frequency shelving; On-board 30V Bipolar Switching power supply; Gold plated RCA input/output connectors; Input radio/CD select switch; Night Illumination; Auxiliary Input/ ideal for iPod; Subwoofer frequency range (30hz - 120hz)