I'll have to check out Deep Purple as well, though I'm fairly spoiled by the parametric EQ's that are in my host DAW software.

I did take some time to peruse the KVR plugin database, and BlueCat has one that is a freebie, with a nice graphic display of the computed frequency response. It also has high and low shelving filters. You can just leave these alone if you like or at least use the low end shelving filter to zap unneeded low frequency content.

-Scott