A little bit of life laundry means that my World Audio Design HD83 valve headphone amp is now for sale. I bought it as a DIY kit back in 2002, and it's been doing sterling service since then, albeit occasionally. I also have a pair of Sennheiser HD480 Classics that I can include if required, as I now have a pair of HD590s. The kit was originally £195 ( I have the original invoice and assembly instructions), but being what it is I am happy to invite offers for what the combo is worth. Collection from Hove, or Guildford from May, or I am happy to post out. Cheers James