Here are some pics of my stock CTH. Front shows on/off switch, voltage switch. And yes, I did do a fuse and on/off switch: I'm not yet that confident in my soldering skills! I'm annoyed I mis-measured the hole for the power plug. I still need to drill holes in the top plate, mostly trying to figure out how to drill a hole big enough for the tube! So that will come later. Tomorrow night the wife is out and I have a hot date with an iron (not of the soldering kind, sadly!) but plenty of time standing in one spot means I'll be able to listen to the amp for a goodly while.
MisterRogers, I'll consider the upgrade. In the short time I've listened it's sounding much better than my other option (my first DIY amp: a cmoy), so I cannot imagine upgrading it just yet. Plus, I have a feeling the bottleneck is elsewhere: my cans. But as the Lowes website says: "never stop improving".