I agree with the need for EQ adjustment. But unfortunately the Rogue doesn't have pre-amp in & out or a tape loop, so the eq has to be between the source and the Rogue. If you have more than one source this can become tricky. You'll need an equalizer or dac with switchable inputs. This same problem just happened to me. I've been happy for 20yrs with my Rotel separates with a Rane ME60 between them. Wanted you upgrade my Revel Performa F30 studio monitors, always though the top end was a little lacking, In the process of ordering speakers I also got a PrimaLuna integrated. My speakers weren't lacking it was the amps. Fell in love with the PL but could not install Rane between pre and power portions. Had to exchange the integrated for a PL power amp, and still waiting for pre to show up.
My one recommendation to anyone getting an equalizer is be sure it has a by-pass mode. (was mentioned earlier)