Originally Posted by 1993 SLE
you HU is NOT putting out 200W....its lucky to be putting out 15 per channel to the speakers....the Bose amp is NOT holding you back its prolly putting out more than your Sony HU.....i recommend using the factroy amp with the HU...as the Bose only amps up the base in the rear speakers....
C'mon now, it'll probably do 50w peak x 4 channels, but no, it'* not 200w RMS. Unless I see some bench testing, If it'* anything like the Bose in the home audio world, it'* junk, doesn't work well with conventional equipment, etc...
With respect to your setup, I would bypass the amp once you have aftermarket speakers to put in. In that case the optimal solution would be to run completely new speaker wire from your Head unit harness to the speaker leads.