I did have two minor issues while building it. The first was during the power supply tests. I kept getting around 3.5 volts on both the 6.3v pads and the 275v pads. I rechecked everything, reflowed every joint. Racked my brain for a while, and ended up just going to bed. I took a look at it the next morning, and realized I was trying to measure AC volts on DC test points. There's a slight typo in the manual on Page 38. On the second step from the bottom, it says "You should see around 6.3VAC on your meter." I was reading quickly, and it didn't even click in my head that everything else on that page, and even printed on the board said DC. There's a lot to be said for the whole "Looking at things with a fresh set of eyes" thing.
The other issue is with the coarse attenuator. When I first finished it, all of the resistance and voltage checks were spot on, but I was only getting audio on the right side. It didn't change with volume, and it was the same on both inputs. I checked everything in the output path, touched up a few questionable solder joints, and tried swapping tubes. Still no joy. Then, while listening, and adjusting the coarse attenuator, the sound came back to both ears. That's when I discovered that there was a slight play in the shaft on that attenuator. Looking at it closely, the swiper on the top side of the switch moves with the shaft, and is likely losing contact when I wiggle the shaft. I tried tightening the contacts by pushing on them with a toothpick, but it didn't change anything. I'm not too worried about it though. If I move the knob slightly to the front of the chassis, it works just fine. Someday, I might look at replacing it, but I'm not in a hurry.
Aside from those two issues, it was a fairly easy build, and it sounds great! I hope you get yours working soon, ALL212!
