This is the first cap that I have ever used in a car audio system, so not an expert. My system is 1264 watts rms total (600 for 4 speakers / 664 for subs). I hear less sub / bass dropout and harder hitting. I do notice that after driving a bit the lights on the cap all go out, but this is probably normal since who drives a car and watches the led. The build quality is very good (very heavy cap) and the price was great at Sonic. I would recommned this to someone wanting a good capacitor for a entry / mid level system.
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