It looks like a decent job, but I would be wary about buying from a first time builder. I am also an electrical engineer and have spent a lot of time doing electronics professionally. I also know my first tube amp would not be as good as some of the pros that have years of building and repairing amps. IMO only, as I don't know your builder or seen his work close up. Good luck.I do not have it yet and cannot try it before I buy it. The builder said that he is some kind of electrical engineer or something, so he certainly knows about this kind of stuff. Much better than a typical amateur I am sure.
What do you guys think of this wiring?