Just received my 650's yesterday and have been burning them in-listening throughout. I don't have a whole lot of experience with hp's with the exception of the 325is, but I have to say I don't think my Grados are gonna be getting much use for awhile. The Sennheisers are so seductive. They exhibit none of the fatigue I get from listening to the 325s on certain recordings. The bass is more visceral as well. I don't mean sub-woofer bass, but definitely more "punch" then the grados.
I have been contemplating a tube amp lately and I think now that I have these I may go in that direction. Anyone able to let me in on the sonic advantages of say a woo6 as compared to a matrix m-stage or any ss/ tube comparison?
Edited by Balmoral - 9/16/10 at 7:45pm