Suitable for all car radios, this product is ideal for upgrading factory sound systems. It features a 4-channel high-low signal converter for both front and rear speakers, with easy installation via plug and play. Constructed using the latest SMD technology for maximum reliability, it generates a switch-on signal (remote) for the amplifier. The level control for front and rear includes a clipping LED, and there is a protective circuit against voltage feedback. The "Full Balanced" input circuit with optimized signal paths ensures no interference signals or switch-on noise is audible. It also boasts a very low quiescent current and includes a velvet bag for installation protection behind the radio.