You can use Parametric Equalizer Pro is a useful and professional stand-alone parametric equalizer which allows the shaping of the timbre of a sound by boosting or attenuating its frequency components. http://www.anwida.com/progs/pareq30.exe
I'm looking for software that will adjust the audio output of my son's HP PC running Win XP Pro, SP 3, as an equalizer would. I have that (Realtek HD Sound Effect Manager) on my eMachines PC but I can't find anything at Realtek for his PC. I think what I have may be bundled on certain PCs only. All we really want is an output equalizer. Any help would be appreciated.