Hi, i tried lot of head phone for the Axe, i have DT990 pro, i tried a Philips Fidelio M1, an AKG K272HD and the AKG K712pro, a Grado 325IS, a Sennheiser HD25-1 II and a Sennheiser HD25 SP, my favorite is the last, the HD25 SP and not the more expensive (125€) it has a good dynamic and is very...