This unusually long potentiometer shaft allows the signal path between the audio source and the potentiometer to be kept very short, thus preventing possible interference of the signal.

ENGADGET: Sennheiser unveils HDVA 600 analog headphone amp, asks for $1,600

Backed by complex mathematical models, they believed the path to economic growth and efficiency lay in letting the free market rip, with minimal interference from the state.

BBC: A lesson in history