Dakshitha

Hi guys, I'm new to the site so my question may seem stupid for some , so sorry in advance :) I have a 20W stereo power amp with a built in pre-amp for treble and base control,but with VERY POOR BASE RESPONSE ! ! ! I'd just like to know where this bass boost will go in, between the source and the amp ( ie the pre amp and the power amp ) or between the power amp and the speaker. Thanks , You people RocK !