
For lack of a better word, I'll quote another Head-Fi'er by saying the software EQs I've used (Creative, iTunes, and Foobar) only "mangle" the audio.

The result: Well it definitely does a much better job in manipulating the audio to my headphones than any software EQ does.

It's a very low end EQ, but I can't detect too much noise added to my setup. So I found a cheap deal on craigslist for a hardware EQ and picked one up yesterday. I've tried using Foobar, and while it won't distort, it appears reduce the volume of other frequencies when the amplified frequency is heard. If I amplify any frequency range, it automatically distorts. I'm currently running an X-Fi sound card and using Creative's EQ is just pathetic. I know many suggest software equalizers as they don't add noise throughout the line up, but my experience with software EQs has been bad. Well I'm the exception and want to use one between my source and headphone amplifier, which outputs to Sennheiser HD600s. From what I've read on Head-Fi forums, there seems to be a majority opinion on EQ: Don't use one, especially for headphones. Before I begin, I'd like to say that I'm a fairly new member to Head-Fi and audio in general.
