Monolith M1060 planar headphones with original box and case. In outstanding condition and sound great with “paper towel circle” mod and “felt in pads” mod. They really improve frequency balance and soundstage, and both are reversible. Photo shows with felt removed from pads but paper towel circle in place.

I can deliver with or without the circle mod, and can supply black leather suede cut for the ‘felt’ mod.

106mm planar driver
50 Ohm impedance