here are a few sources I've found, have no experience with any Triode Supply Japan http://triode.netoffice.ne.jp/ Bottlehead http://www.bottlehead.com/index.html Valve magazine http://www.bottlehead.com/valve/valve.html Jute on Kits http://indigo.ie/~andre/Recommendedtubekits http://www.audioxpress.com/index.htm http://www.hometheaterhifi.com/ has some DIY information
