Well, no amp or cable will change what the TH900's are. Only thing is eq. Does anyone have thoughts on the Lawton mod, just the tune-up mod not the cups? I wonder if the tune-up mode will bring the mids at least in line with everything els. Or you can search for a pair of Audio Technica ATH-W3000ANV's, they have the edge in the mids over the TH900s.