Re: Can someone explain this whole TAD tube thing?
Actually, yes you can. There are still tubes being manufctured here in the US today. While it is mostly microwave and other RF stuff, there are a still a few audio tubes being built. Western Electric here in the US makes a 300B and a KT88.
I suspect the greater reason for a lack of tube manufacture in the US is not some evil enviromental regulation, but more the fact that vacuum tubes for audio are such a tiny market that few US manufacturers, big or small, have been willing eat the costs of setting up the tooling and doing the R&D needed to start turning out audio tubes when they don't see it likely that they'd be able to recover those costs through enough sales.
Yes you can - just not in the United States or any other country with a highly-regulated manufacturing industry.
That's why they make them in Russia and China.
Actually, yes you can. There are still tubes being manufctured here in the US today. While it is mostly microwave and other RF stuff, there are a still a few audio tubes being built. Western Electric here in the US makes a 300B and a KT88.
I suspect the greater reason for a lack of tube manufacture in the US is not some evil enviromental regulation, but more the fact that vacuum tubes for audio are such a tiny market that few US manufacturers, big or small, have been willing eat the costs of setting up the tooling and doing the R&D needed to start turning out audio tubes when they don't see it likely that they'd be able to recover those costs through enough sales.