You're likely thinking of a different component, or perhaps misremembered the term. To help me understand what you're looking for, could you please describe:
* What is the problem you're trying to solve? (e.g., "My radio doesn't work," "The speakers are blown," "I'm trying to install an aftermarket amplifier")
* What makes you think it's related to a "rap module"? Where did you hear that term?
With more information, I can give you a more accurate answer.
