I heard the Abyss at Whittlebury hall November ish 2013 with no idea of the price, and when they told me I was stunned that anyone would think about paying anywhere near that much for them,as they seemed poorly made, the fit was awkward and the guy had problems adjusting the headband screw., .. The Stax SR009 however..... the seed was planted, and after a further longer listen at a dealers to both the SR 009,which I now have bought ,Abyss, just to confirm with my ears what I thought the first time, as by now there were some reviews saying how good they were(the king has no clothes) I was still not impressed. The senn hd800 were the only other pair that impressed me(well worth the money) and to be honest if I could not have afforded the 009's I would have purchased them.