EQU is a realtime graphical equalizer that will equalize the audio of almost everything you play through XMMS (OGG, MP3, WAV, etc.). You can choose four different band configurations (10, 15, 25 and 31), all of them with ISO central frequencies, independent gain settings for left and right channels, and more than +-14dB of gain per band. It features a skinnable GUI and shadowed mode.