Porta color

[user181]

Originally Posted by dieseljeep

Compactron tubes are multi-section tubes that are really not that different than single or dual unit tubes that you're familiar with.

Example: the 6AC10 is like a triple unit 12AU7. Looking at the schematic will help you understand.

Yea. Consider Compactrons to be the electron tube equivalent of a silicon integrated circuit chip, in a way. Loosely equivalent in principle.