I'd love to see a list of DIY kits compiled.If any of you know of some kits you'd like to recommend (and aren't affiliated with the kit makers), please list them here.
I know that Antique Electronics (www.TubesAndMore.com) has some kits. There are also some SET kits I know of, but that's better for the SET forum. Consonance makes a P-P tube amp kit, don't they? And there are some other tube devices in DIY form, like Steve Bench's active crossover. So whatever else you can think of, please list here.