Added this cool little custom switch for when I still want music, but don't want my subs blasting. Great location, easy to drill the hole for anyone interested. Just tap into the blue (remote wire) that turns on the amp when the head unit has power.

 

Simple but safe idea. I just turn down the gain.

 

Most aftermarket head units will have a feature that will let u turn off your subwoofer. Im assuming you still have your OEM head unit?

 

But not immediately obviously. His prevents the amp from sucking power too.