And i got that noise filter hooked up but the daamn thing makes my bass quieter! its basically acting as a high pass filter set to like 40hz //content.invisioncic.com/y282845/emoticons/verymad.gif.3f39c5c2fd57527b671fad3efdfac756.gif so now i have to head up to radio shack and get some couplers and stuff to hook it into my 4 channel rca's. cuz the input is a male plug and the output is female plug. and i have no room where my head unit is to put them in there so i gotta hook them in right before the amp