I have allways used Rockford Fosgate power amps....super clean and very very efficient
try the punch series...this 4 channel amp is excellant price.....channels are bridgable also...... run two of the channels bridged for base and the other two for mids and highs in stereo
http://www.amazon.com/Rockford-Fosga.../dp/B001AO4NUI
or this
http://www.sonicelectronix.com/item_...mpaign=froogle