Aye Paul, I think I've come on a fair bit since thenPaul Barker wrote: Now you would be able to get the power supply right.
In theory just one pair of output valves should work as a test bed, when you know all is well add output valves in pairs.
A worthy project in any case.
The book has dispatched, looking forward to having a good read.
thanks again for the info T.I.
Once I'm up and running and know things are going to work, I'll open a thread in the projects section.