The PowerBass ALC-4 is a 4-channel high to low level active converter designed for car audio systems. It includes a wired variable remote level control for the rear channels and features auto turn-on circuitry for convenience. With a variable 13Vrms output, this model offers flexibility in setting the output levels. The 2CH/4CH selector switch allows for easy customization of the channels, making it a versatile option for car audio enthusiasts looking to enhance their sound system. Good condition