It's alive! Very gnarly, much more so than my 54 Champ. Sounds fantastic, my Jazzmaster sounds way better (more bottom) than via the Champ, too. And it's loud, loud, loud. Jensen sounds great. Really happy with this. No real earth hum, no more than my other amps, just the normal single coil buzz depending on how I'm sitting, no real buzz at all without a guitar plugged in. It's getting dark now and I'm worried about shorting out any pins (which, but these are the voltages I have so far. B+: 332 V DC B+1: 289v DC B+2: 243v DC 5Y3: Pin 4: 290v AC Pin 6: 290V AC Pin 8: 745v AC Pins 2->8: 4.7v AC 6V6: Pin 3: 312v DC Pin 4: 286v DC Pin 5: 5mV DC Pin 8: 18v DC Pin 2->7: v AC Thanks everyone, especially @King Fan for your support, @jsnwhite619 for transformer advice, and to all those who went there before me and shared their knowledge. I will neaten up some of the wiring and make sure there are proper mechanical joints where possible. Need to find a permanent mains cable etc. Why did I throw a bunch out recently? Woodwork next... which will be an even bigger learning curve.