Thanks, I'm already pretty much recovered.
A question for all you tube enthusiasts. I see quite a few designs out there like the Millet variations, most of which are inverting, e.g. a common cathode stage (inverting), buffered by a mosfet source follower (non-inverting), which adds up to an inverting amplifier. Nobody seems to care. I searched one of the Millet threads for the word 'inverting' and it wasn't mentioned once. Phase inversion is a big issue for many audiophiles though, and it is increasingly considered a no-no. It's easy to avoid in solid state amps, particularly opamp-based ones and discrete amps mostly have the option of applying positive feedback to the inverting input of a LTP.
I have the option of building this amp as inverting or non-inverting depending on how I connect the transformer, it's just a question of which wire to connect to B+ and which to connect to the OP tube plate, but it makes a big difference when considering any global NFB. I can apply NFB from an overall non-inverting amplifier to the cathode in the input stage, but I think this is a bit ugly, but it means that the amplifier overall can be built non-inverting.
What do you think? Obviously I can switch it around later, but I'm close to finishing the first iteration and it affects the neatness of the wiring. Once cut, I'll have to patch in a bit of wire if I want to change it later.