The idea is a good one, but:

1: if you were able to change the frequency of the bands, like in a parametric EQ that you would see in Fruity Loops, that would be better, but that is not the biggest issue.

2: The module does not actually shut off the dry output and instead directs both outputs to the browser out, causing the signal to clip when, lets say, you want to do a moderate bass boost. The only way to not have it clip is to turn the preamp all the way down, but THIS DISABLES THE EQ. Therefore, it is completely useless at what it tries to do at least for me, I do not know about others. Maybe I am making a mistake in using it, but I do not think so.

3: And I almost forgot! The graphical interface lags out severely for me. Whenever I slide a bar too fast, it applies the change over the next two seconds, which is infuriating for someone who is trying to find the right balance in the frequencies by ear.

So yeah, Firefox, I hope you get a better equalizer.

EDIT: Actually I think the double-mixing phenomenon I was describing is a problem with Firefox itself, not this particular EQ. I just tried it with another similar equalizer and it behaved, well, similarly. I am also using Ubuntu, don't know if that has anything to do with it...