[EdHolland]

They are really interesting. I first encountered them whilst fiddling with an old oscilloscope, when I was still in the UK. There wasn't so much on the internet back then, but I did manage to find out what the tiny transistor sized components in sockets were.. Nuvistors. A few years later, the HiFi comapny, Musical Fidelity reportedly bought up lots of old stock to produce a range of components that used them as the NuVista line.