Drive 30 noise problem

the noise problem began when I installed my newly bought drive 30 ,had no grounding or what so ever problems before that, had no noise issues with my amps or head unit , after installing the drive 30 a very distracting noise appeared ,the noise goes away when I plug out the input rca s on drive 30 yet I have no such noise when I plug in the input rca s to any of my amps directly ,if I had an grounding issue with my headunit than the noise would have also been there when I plug the input rca s directly to my amps ,also I turned down all the input and out put gains on drive30 but the noise is still there even I do so , is it possible for drive 30 to be sensitive to noise that my brax amps do not catch cause when the input rca s r connected directly to my amps the sound is crystal clear , or is it possible that the input grounding on drive 30 is broken , I ll will try another drive 30 tomorrow I ll also do a re grounding for drive 30 all suggestions other than these r welcome