I have a Supra 21V and still have noise issues in my sound system. I have a MB Quart head unit with 2 amps. One amp is running in boat speakers and sub. The other is a Wetsounds amp running 2 Rev10s on the tower. When I pause the music or listen to it at a low volume I hear a "static" type white noise that is very annoying (regardless of whether boat is running or not). I have read about running the power from my head unit directly to the battery or amp. Is that what I should do? The noise is in both the in boat speakers and tower speakers. Right now it runs to a switch on the drivers panel so I can turn the stereo off with that switch. I hate to lose this functionality but will do so if needed. Right now the gain on the Wetsounds amp is turned down to about 35% or less to help reduce the noise but this makes it hard to hear the speakers when boarding. Please help if you can!!! I am not an audio guy but am handy enough to follow logical directions.