i think there may be a THD difference (lower ohm load=higher THD?? i could be wrong //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif), but other than that, i dont think sois there any advantage running a 4 ohm over the 1 ohm? I am trying to figure out how to setup my 2 DVC 4 ohm subs, I have to decide on what amp to buy.