Can u hook an equalizer to your factory amp in the tl if so anyone no how

 

You could. You would need to do it on the preamp side, using something with low level in and out. Something like an Audiocontrol DQXS would do it, but the real question is why?

There is a DSP program in the factory amp that optimizes the junk speakers for the junk amplifier.

You'd really just be spending $500 to polish a turd.

 

^ What he said