I have a elevation audio 15 inch execution 1000 watt sub and a rockford punch 600 watt amp, my friend tells me I need to get a aftermarket radio because the factory one will not let me hear the full sound n output from the sub..Anyway let me know if this is true or not...

 

no you will be fine u just need an a/c converter i think its called. i got mine at best buy for 15 buks

 

What does that do?