Apply audio effect to multiple clips

I have about 100 clips in a timeline. I want to add an audio effect (like highpass filter) to them all.  If I select all the clips and try to load in an audio effect , it wont let me because I have multiple clips selected.  How do I add an audio effect to all these clips?

I thought maybe if I can merge them all into one giant clip, then it would let me do it.  But I can figure out how to merge them all into one clip.