"08-23-14: Ronwave
Thanks for your input guys. Just to clarify. I love the clarity of my set up and on many tracks, especially newer recordings there is plenty of bass as is. I'm not a fan of iTunes because the files are so compressed. And when I've tried the EQ on it it just makes the files sound over all less clear.
I'm just looking to add a few DB from time to time depending on the track. Like adding a pinch of salt :)."
Something's not right. If you just use a small amount of EQ in iTunes, you shouldn't loose clarity. I haven't used iTunes in a while, but most EQ's in music player software have an overall gain control, as well as the individual eq frequencies. For best sound when using a PC, you are supposed to have your volume on the player software and your OS set to maximum. But not the one on the EQ. That should stay neutral or 0 gain. Its usually half way up on the slider. With too much gain, you may start to break up kind of like when have too much gain on a phono cart.
Aside from that, try ripping some of the problem albums to wav and see how it sounds. iTunes will play wav.
If that doesn't work, try a different music player. You don't list your OS, so here's a list of free players that work with Windows, Mac and Linux. Amarok, Clementine, Audacious, Banshee and Quod Libet.
If you try the stuff I mention above, there's a good chance you'll be able to fix your problem without having to buy anything.