Steve Jobs tests the first iPod prototype

[Happy Jack]

[attachment=134769:1921 Amplifiers.jpg]

[Roland Rock]

:-D
Reminds me of this, which I'd really like
http://www.boredpanda.org/analog-tele-phonographers-christoper-locke/

[Balcro]

[quote name='Happy Jack' timestamp='1368523232' post='2077901']
[attachment=134769:1921 Amplifiers.jpg]
[/quote]

[icastle]

[quote name='Happy Jack' timestamp='1368523232' post='2077901']
[attachment=134769:1921 Amplifiers.jpg]
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I thought it was Kim Jong Un demonstrating his country's new high speed WiFi.

[flyfisher]

A sort of related example would be the 'sound mirrors' built to detect enemy aircraft in the days before radar. Examples are still dotted around the south coast of England.

http://en.wikipedia.org/wiki/Acoustic_mirror

[Happy Jack]

[quote name='flyfisher' timestamp='1368539189' post='2078177']
A sort of related example would be the 'sound mirrors' built to detect enemy aircraft in the days before radar. Examples are still dotted around the south coast of England.

[url="http://en.wikipedia.org/wiki/Acoustic_mirror"]http://en.wikipedia....Acoustic_mirror[/url]
[/quote]

I prefer the Japanese War Tuba ...

[url="http://en.wikipedia.org/wiki/Japanese_war_tuba"]http://en.wikipedia.org/wiki/Japanese_war_tuba[/url]