The Tube. If you’re British – The Valve. But specifically, the vacuum tube. It’s been with us since 1904. That’s right – this amazing tech is 120 years old as of this article. (Human years not dog years.) So, in this world of digital mastery and propulsion – why do we still care about a vacuum sealed glass bottle that controls electric current flow? I mean, Kemper and Fractal … [Read more...]