How to add audio filters to clip BEFORE adding to timeline

Is there a way to add filters to each channel of a clip BEFORE I edit it into the timeline?

I have a dual channel stereo clip that I’ve converted to Dual Mono. I have different people on each channel. I would like to apply a Level filter to each channel and adjust each channel separately it for each channel BEFORE I add/edit the clip in the timeline.

Is there is a better way to accomplish my objective? I want to make global adjustments to each channel in a clip so I don’t have to go back and apply the adjustments to the multiple clips AFTER I’ve added them to the timeline.