This RCA preamp noise filter plugs in between your receiver's preamp outputs and your amplifier.Hi-Low Converter, Works for all Massive Audio Amplifiers (and most other brands)Takes any speaker level stereo signal from any source (head-unit) and converts it to a perfect dual 4.5 Volt line level low distortion RCA outputPlug & Play Installation, Compact Housing for easy install, Ground Noise IsolationBalanced Left/Right Matched Inputs, Music Signal Sensing Turn ON, Remote 12 Volt External Turn OnDual L/R Balanced 4.5 Outputs, Ideal for adding a subwoofer to your vehicle without giving up factory features
