well here's my problem, i got a pioneer 7100 HU and well it only as two preamp outputs, one for the sub, the other is just for the front speakers, i want to add an amp to help power my kappa components in the front and my 2 ways in the back, i know there are some amps out there that accept high volume or high voltage or high something inputs, was wondering if anyone has an amp like this that they would recommend, i am looking for bout 4X70-85 watts rms.....thanks, JK