Whether you need a simple car radio or the top of the class DVD player, Edds installs the best make for you pocket. Speakers are either custom built into the door or backboard or they can be replaced where the original factory standard speaker were placed. Amplifies can be hidden or custom built for display. Sub woofers can be one or two or as many as you required, theses can be custom build. You can design or we can design your custom fit, we can recommend what qualities you may need for you specifications in sound.