need some amp help

[ramn it]

I had a 7in flip out screen that got terrible reception so I up graded to a kenwood HD now and realized it wasnt the head unit . Its my amp?? every time I hooked the amp and subs my radio gets mad static but if I unhook the amp and subs, crystal clear stations . Does anyone know what causes that?? I checked all my connections and the ground . and with the kenwood they have a power wire just for the amp but still get static where ever I hook the amp too .and I got all the wires away from the antenna but it makes no differance.
Any help would be appreciated .

[AWE Daniel]

Were is the amp getting its power, it should come straight from the battery not from the Headunit. And is the static only from the subs or is it radio interference?

If it is radio interference I am thinking maybe the wire is loose at the antenna and maybe the radio is only picking it up from the wire itself, and when the subs cut on the magnetic field is enough to mess with the reception.

Also the radio ground in the factory location isn't always the greatest, I know several people who went to the extreme and ran a ground from the radio to the frame.

If you have access to another amp you could throw that in there and give it a try.