We will need photo's of the build process. The ownwers of the site from DIY will allow a build for personal use only. None of the parts will impact anyone on ART in terms of revenue. First descisions are whether to follow the parts list on the site and if not what changes to make. Next a chassis. That should be a good start. I will say that Angela has the best prices on these tubes and a good set of chinese made ceramic 9-pin sockets. I already have some of these tubes and sockets. Keep me informed as to how you want to start; J.R. The explanation of exactly what and why the circuit is doing would also be nice.