ZaenilleCompared to the Philips Fidelio X2, the 7XX is more-revealing, with a wider sound-stage. They are also lighter, have less head-clamp, and bigger earcups. Though, the X2 has a more-durable, tighter construction made with superior materials. For overall versatility, I'd give the edge to the X2, but the 7XX is more accurate with orchestral music.