1073's, 1272's and all the BA283 pre family are real easy to build and you can get the original transistors (BC184C) from a Fairchild dealer, plus I believe Lundahl made the original input and output Trannies, they list them on thier site. I have heard people say that "the sound is in the Iron" So, for you electronic buff's, go to http://www.jlmaudio.com and check out some of his clones/ kits. He has schemos for everything Neve.
You can build racks of these. I think he has the 1081 also, that used opamps. JLM is going to offer full neve and API kits too. Go to [="http://www.jlmaudio.com"]JLM[/]