A GM dealership near me is going into the car audio business because lots of their customers like fancy video for there escalades etc, and they are an hour from the nearest audio shop so they have a monopoly. They want to know how to make a sound board (basically the best way to convert 110v to 12v). I use a 550 amp battery charger to **** around with my old stuff when im working out in our shop but that doesnt help them any. What do you guys use and i hope i dont step on anyones toes by asking this.

 

They need to buy a power supply like one made by Cascade Audio Engineering. They are available in many different amperage ratings for different applications. That is just the starting point.

 

^ yup they smell the lucrative world of aftermarket radios (LOL tooling costs will kill them)

 

depending on what equipment they are looking at carrying some times with the buy in the company will give them a board preloaded with their product.