EagleDo, why not an EQ? Lots of good options there, and pretty easy to boost specific treble frequencies. Personally, I tried the Boss unit and found it to be incredibly noisy when boosting anything. I've also used a Barber Barb-EQ, which is less noisy and pretty flexible. With the attack control dialed back on the JB, the effect can be subtle enough, I guess, and you still get the focused high end. I'm just guessing you might get more play out of a straight EQ.