I was wondering much the same thing, but specifically about the pros and cons of the digital equalizers in media players (e.g., foobar, itunes) and/or other software. Does digital sound processing of this type have any detrimental effects on the data stream and , ultimately, the audio quality? I played with the digital parametric equalizer in some recording software (Ableton Lite) once and found I was able to make adjustments that really improved the sound quality for me. Incidentally, one of the adjustments was to boost the frequencies above 10K a few dB. I have been considering the Behringer Ultracurve EQ option, but am moving toward a PC based system and would like to know if equalization could be dealt with in the media player or possibly with a software plug-in.