When we got the 340Da. late last summer and finally got the boat home I spent about an hour trying to get the stereo to work. I knew it worked because the Surveyor had it on to check it out. Now I'm not going to lie it got the best of me. I could hear the amps kick on but no output. The boat had a Pioneer head unit in it which worked fine when the Surveyor turned it on. The Admiral thought I was losing my mind the way I was cussing and carrying on about it. It's time like these when then Admiral has a hard time not laughing at me. So I decided to do what any raving mad man would do over something so simple was walk away from it . I was sitting in the cockpit enjoying the day when I realized there were 4 switches at the top of the steps in the cabin and 2 of them went to the lights the others were zone switches for the speakers.