The biggest car audio systems have amps that use the pre-amp outputs to daisy chain a large number of amps together to power a large number of subwoofers or full range speakers.
A build in crossover is great for a subwoofer amplifier.
im ungrading my car audio amplifier.i want to have a good quality amp that i can play as loud as i want it to. what should i be aware of be4 buying it? any advice?

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