When you installed your new amp, did you run new power wire?
Alot of amp installation interface problems is the run the power wire the same location as the rca, running in different places and keeping the power wire away from any input wires is best, if still problems than a noise filter put in line should help get ride of the annoying wine.

I have my new amp delivered today, thought I would ask here before I tore into anything.
Has anyone found a good spot to run power wire through the passenger firewall, I am mounting my new amp behind the passenger seat, plan on running the power wire through passenger firewall, passenger kick panel and back, My rca and remote wire are already ran through console and ready, just need to run power wire, 4 ga.
Have a pair of audiobahn amd60h 6.5, low frequencies down to 30 hz and very small air space needed in a box .15 cu foot.

Just qurious if anyone has dug into passenger firewall, TY
Speedy