(Caveat: I have not yet listened to all of the YouTube videos on this project yet..) Question: on the Skunkie Designs schematic for the 300B power supply, I don't understand what the +5V dc feeds are for. I don't see where those are feeding anything.. What am I missing?

Just finished my 300B amp. Started with J.C. Morrison, but ended up with SkunkieDesign as it really sounds outstanding . Paired it with EAR834 phono preamp build.

Hi folks... another question here. Would I be better off building an EL34 amp myself? Or should I just buy a Reisong A10/A12 or a Nobsound 6P1 and do mods? I'm thinking of this from a perspective of balancing economics, effort and results. Also, I have virtually no test equipment currently. I do have a DVM. If I do a build, do I really need to to "test" it with a signal generator and scope? Or just be sure to follow the schematic accurately and do some basic DVM checks when powering up? (Part of this of course is personal preference, in terms of the satisfaction of building it myself from scratch, but let's leave that out of this for now. Part of me would love to do that, but it seems it will actually cost more, and I'm not sure that's the best entry point to tube audio. BTW, I'm a very skilled electromechanical tech, with good soldering skills, etc., so that's not an issue.)