I switchback and forth between my Utopia and HD800s, a few days one a few the other. Since I upgraded my amp they sound almost the same but with more air and space with the HD800, a bit more midrange power and bass with the Utopia. But what used to be an enormous difference is now minuscule. This really demonstrated once again really powerful high quality electronics can grab and dominate different speakers/headphones. Lessor electronics exaggerate differences between good headphones.