Half DIN Size fits into dashboard with Radio Pre-Amp Line In 10k Ohm Hi-Impedance Inputs 100 Ohm Low Impedance Input Fader Slide Control Lighted Power and Separate Boost/Defeat Switch 7 Band Graphic Equalizer w/12dB Boost/Cut Dual 5 Segment Multicolored LED Power Meters Input Sensitivity:2.0 Volts Low Impedance Frequency Response:20-20kHz 200mV High Impedance 4 Gold Plated Output Jacks 2 Gold Plated Input Jacks S/N Ratio:Better Than 85dB Floating or Common Ground Hook up