Rockford RFHLC High Level Speaker Signal to Low Level RCA Adapter Go to amazon.com Related posts How to buy the best audio line output converter? Feature2-Channel High-to-Low Level ConverterHigh-to-low signal converter to connect 4-channel amplifiers to radios without RCA outputOutput Voltage: Up to 3V (low-level) DescriptionRockford 2 CHANNEL HI LO CONVERTER