Retro Tech Tuesday: A Different Kind of Tubes

Sure you probably know that before today's integrated circuits, many electronic devices, especially radios and TVs were made possible via "a series of tubes." Vacuum tubes, to be precise. What you might not know however, is since the tube was a part that periodically needed replaced, similar to a lightbulb, tube manufacturers appealed directly to consumers in touting their tubes as better than the competition:

Image: Triode Electronics

You can see more retro tube ads here.