Hi guys, I thought I'd have a bash at one of these.... I was able to get hold of a cheap power transformer for $4. Not your usual. PT is firstname.lastname@example.orgA and doesn't have a heater supply, so another PT will do the heater supply and maybe a relay supply. A quadrupler circuit will be used to get the desired HT of around 380v loaded. I have used this PT in a JTM60 build and it works well. A recycled chassis so there are a few extra unused holes. I'm getting 412v unloaded.