My computer does have an EQ, and it can switch automatically based on if the headphones are plugged into the front panel, but I also use these headphones on devices that do not have an EQ option, so it would be nice to have something that's automatic. It's silly that bass boost is the only...

I really only need something to boost the treble, so nothing fancy. The best devices I could find were the more expensive FiiO amps. Are there any other options?

I would like to get some headphones that emphasize bass, but since I can't demo any of them, I am trying to make a decision based on recommendations, reviews, and graphs. So here's the confusing part.. I'm looking through the graphs for recommendations, particularly the Beyerdynamic Custom One...