I'm waiting for delivery of my EA iamp 800, and would like to purchase a graphic EQ to use with my DB so I can use the parametric EQ on the iamp for my slab (a Smith 6). I've heard talk about "Constant Q" graphics being better than your average garden-variety graphics, but I'm not really sure what's out there. Features I'd like to have if possible: * One rack space only. * Variable low-cut filter. * 31 band. * A "cut only" feature would be nice. * Low noise. * Less than $400 price tag. Anybody have any experience with any units like this, or suggestions of models to try out? Thanks.