@Clemmaster, I did switch to the velours that came with the HE500 and liked it better so far. Also, I took out the grill cloth too to open it up a touch.
After many hours on it, I do feel the difference in sound stage in comparison to the Q701 is quite a bit.
The only one instrument I don't like to listen on the HE500 is violin which I've played since 6 and still do daily. The HE500 smooths it out a little too much for my taste while the Q701 still retains the rawness of bow movements, string sounds and has a touch more "air" overall. One thing I wanna add is that, the violin tracks did improve when I listen to same track on the E9K instead of the E17. I now start seeing and believing in amp power pushing these ortho. I've just discovered where it matters in my case. Everything else from guitar, piano,sax, to trumpet sounds fine with much dynamic and energy. Hopefully, as the HE500 breaks in it will improve more.
U dont need to spend a fortune to get ur he500 make violins sound good....just as in reality..i love the sound of a violin..my favorite instrument to listen to...as is a good played electrical guitar.