i would say listen to the 650's, and if they sound pretty good the way they are, then leave 'em alone.
i dont know for sure, but i would reckon the "replacement cable" theory is about as much hog-wash as the 'monster speaker cable' theory.
and how do the 650's sound? i have been wanting to get a good pair of headphones myself. do me a favor.. put them on, crank up some music, and have someone sit about 10 feet away from you, and ask them if they can hear the music coming from the headphones.. and if they can, how loud is it?
bigjohn
