I haven't tried it as my studio is in peices getting new acoustic treatment, anyone else try it? only $30 I think, works as a bass booster too. pretty interface. Supposedly preserves transients.
Their free VST eq is one of the better free plugins. This should be good if they're charging for it.
[edit] Or not! I think I got that eq mixed up with something else, because I tried it the other day and it kinda sucked. If you want to know what bad audio sounds like, boost some highs with the wwaym eq. It sounds like Gilbert Godfrey's face looks. Not an attractive sound!