Hey guys just needed some help on installing a 4 channel amplifier for 4 speakers in my RX, I got some JBL 3 Way speakers rated at 150 watts each and I wanted to see if it was worth installing an amplifier or if the stock radio was powerful enough to give the speakers good sound. also if I did go the route to install the amplifier could I just connected behind the radio in the dash and connect it to the existing speaker wires coming from the head unit? Or will I have to run new wires to the speakers? any help would be appreciated thank you guys and have a good day.