For use when adding an amp to a factory radio to convert radio's speaker level output to the lower level RCA input For use with radios with 2 watts RMS to 40 watts RMS of output per channel 50 watts maximum input per channel both output channels are adjustable Linear 20 to 20 kHz output based on the input signal rolls off below 20 Hz for subsonic reduction Transformer isolated for optimal sound and performance Maintains correct phasing Works with most factory-installed radios
