There are equalizer settings here: level and on/off duration.

And there is a separate tab for a thorough equalizer setup:

You select the main audio device here:

And the signal source, too:

And that’s exactly where we’ve got a problem. The equalizer refused to work when the audio signal was where it is normally supposed to be – on the line output. The microphone and line inputs work all right, but the most demanded mode – using the equalizer when playing music – is unavailable. There is just no such mode here. Of course, it’s not a problem to connect the line input and output, but we can’t understand the developer’s reasoning. Checking the option “Show Graphical EQ for all system sound” did not help, either:

We can think of only two explanations: this software either works wrongly with the integrated audio subsystem of our Intel D955XBK mainboard or the equalizer is only supposed to appear when the user tries to sing a tune into the microphone or record something from the line input. The following picture was the maximum we could see of the equalizer: