Just got a pair to mod.
On first listen there seems to be good potential here. (I have a fully moded HE-6).
Changed the pads to Dennon D7000, opened the grills. But that made them too "hot".
Changed the grills to the old HE-6 with foam and "stuffing", less sibilant but still needs some improvement and lost some decay.
Has any one tried the Fazer mod? I may give that a go this WE.
By the way, these do need power, not the same as HE-6 obviously but they definitely...