Equalization for my set up

I have a Peachtree Audio Decco65 pushing a pair or Paradigm Monitor 9s. Mostly I play iPad Beatsmusic subscription app thru Apple TV into the Optical input of the Decco. Sometimes I play CDs or iTunes or other internet radio. I love the clarity and utterly clean audio especially Beats. My only minor issue I'd like to add just a tad of low end. I'd like to avoid adding a sub if possible I prefer the true stereo experience.
iTunes has an EQ and I have "boom" on my laptop when using the USB. Boom sounds really bad. And I prefer the higher bit rate audio on Beats than iTunes. None of the EQ Apps on iPad function when streaming to Apple TV.
My questions-
Does anyone know of an EQ app that will work when streaming Beats and while Apple TV is activated?
Or since the Peachtree is an integrated I know I can't add an external EQ. Although if I knew someone who could customize an 'insert' to put an nice analog EQ "in line". Anyone do that level of component work?

Just looking for a few db more of Low end around 30 to 40 hz. Open to ideas.