This impression on the Adrenaline from the Danish meet impression thread. A more in depth review will be forthcomming from darkless who has done the burnin and is the owner of the HD800 it is used with. And the stock cable used to compare with in the below comment was reterminated for balanced. A great thank you to Mark for letting us borrow it, not many would otherwise have been able to try it.
Lawton Audio had graciously sent a balanced Adrenalin for HD800 to the meet, burned-in by one of the participants before the meeting. And upgrade cables for HD800 is of great interest to me just now. When first listening to the HD800 /GS-X I didn't think much about the cable but noticed that it sounded better than what is usual with my Headroom Balanced Max. We swapped to the stock cable and it was clear to me that Adrenaline improved over the stock cable. With the stock cable the usual treble character of HD800 with stock cable returned. It is subtle but there is some unnaturalness, it is not harsh, not even especially bright but something I can't find a good description for. Smoothness and dynamics also improved with Adrenaline. I had no great exception on Adrenaline and a previous cable comparison showed less difference. Of course, it was a short listening to Adrenaline but I felt convinced that it improves on the stock cable in in important way. Finally, I don't like the looks of the cable and definitively not the price. But tempting it is.