Lovely sounding planar headphones, very balanced sound across the frequency range. Big improvement in all frequencies on the original HE400 which I had before, with the possible exception of bass impact (but these are tighter). Quite sensitive for planars but they do scale up nicely with a good headphone amp.
In excellent condition and boxed. Some very good reviews online. I'm after £150 collected from North London or postage at buyer's cost and risk.