But you still have to control it manually, but given the OP's desire for retaining the stock system, its probably the best choice.
Most people define the louder sound as the better one, not the higher quality one. Also, a fair number of people like the BBC dip and the 100 Hz bump. Neither are good for sound quality, but give the impression of high end extension and low end grunt.
Also, when most people go to show off their sound systems, be it their car or home, they end up clipping their system. Clipping automatically makes any sound quality comparison useless because clipping = distortion.