I've got a Rode NT1A going into an ART Digital MPA II mic pre going into a Roland Quad Capture USB interface. BUT the vocal sound I get skipping the ART mic pre and going right into the Quad Capture sounds almost exactly the same as using the ART mic pre!!! So of course I'm wondering: is the Digital MPA is a worthless $400? OR, am I doing something wrong? Any thoughts or suggestions as to a better $400 mic pre to use in my chain would be appreciated!!! Thanks!