So I'm embarking on my first amp kit build (haven't decided on the kit but it will be simple). As I'm an old retired EE, I'd been thinking about constructing an electronics workbench as a hobby anyway so this is my opportunity/excuse. As with guitars, the trick will be concealing the number of orders and costs from the chief of staff, but that's another post. I own a DMM and that's pretty much it for TE, but I can probably assemble the kit and make it work just fine. The list of equipment that I'm thinking I should have is (at a minimum): 1. Oscilloscope 2. Waveform Generator 3. THD monitor (not sure about actually needing this, certainly at first...) 4. Dual power supply 5. Variac with current display (for bringing up new designs slowly) 6 2nd DMM It appears that most of this stuff (especially O-Scopes) have come down in cost a 'lot' since I was designing (~1980) when a decent Tek or HP scope would fetch many thousands. So what brands and styles of TE do people like?