This cap does the job and I know that they say 1 farad for every 1,000 watts but I find that to be inaccurate. When we drop bass notes they hold for at least 2 meaty seconds. The cap drains quick and the fluctuations on the voltage LED display should not vary from 13.8 down to 12.7 on a bass note. Caps work but not for people dropping real bass. I say 5 farads for every 1,000 watts of bass and there will be less fluctuation on voltage to the amp. If you listen to rock then this would do you just fine. If you're dripping trap, bass CD's or dubstep you will need a lot more than this cap. Overall it does what it's supposed to. When is comes to power always have more than needed more the application.
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