I have tweaked the sound on my DSPs using the tone controls to suit my preferred sound. No problems with that I'd say. Why not just bring the treble down a bit and see what you think?

Rega P8, Rega Apheta 3, Gold Note PH-10 and PSU-10, Meridian G68ADV, Meridian 218, Moon 340i X, Dynaudio Special Forty, REL T7/x