Car amp accessories are extremely popular in the custom world. They allow the owner to take their sound system to the next level. There are a variety of accessories that can be used to add a great visual appeal and functionality to the system. Capacitors are popular because they enable the sound system to be used to maximize the sound. Other popular amp accessories include amp racks and mounting gear, lights and other effects based accessories. A rack or mounting gear is extremely important. Not only does it give you the opportunity to create a personal look, but it also provides much needed air flow around the amp, as amps get hot because of the large amount of energy they put out.