searching for a standalone auido input shield with 1/4 input and A/D chip

so as the the topic stand im working on the 2nd gen of lighting project i had built for me using a custom chip that basically is just an audio input wired into a aurduino chip out putting to 16 modulating LED strips. This time around were trying to do a better version and have been looking for a shield that primarily does audio input from a 1/4 jack to an A/d chip or just and A/D shild that i can wire an input to then run that to an aurdino mega. trying to go this route rather than inputting straight to the mega. i would apprecicate any help in my search as i have come up empty so far. thanx