radio

i remember making a radio set in school with a couple of wires, a ferrite rod and a loud speaker. You could get Radio 1 good enough.

Hell, you can even make non-powered crystal radios.

That's all the sound quality anyone cares about isn't it? Thats the level of technology people care about?

When Civilisation Falls we wont be communicating by DAB from our dug-outs, will we?