4-channel car amplifiers

Four-channel amplifiers are the most popular these days, mainly because of their variability when connected. You can connect a four-channel amplifier for front and rear speakers, possibly for front speakers and a subwoofer, and in extreme cases, even for two subwoofers thanks to the amplifier's bridging capability. Their use is also possible for the active connection of one pair of component speakers, when you connect each speaker separately to one channel.