What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Marantz HP-1DB

HP 1DB Headphones

These special four-driver headphones are designed for the personal enjoyment of Dolby Surround effects. High-energy magnets give clean powerful sound. These headphones are simply connected, the PM683 Master Amplifier for example has dual connections to feed these headphones from its built-in Dolby Surround processor.


Type: Dynamic headphone, open air-type


Front : 44 mm Dynamic type

Rear : 30 mm Dynamic type

Impedance: 100 ohm

Frequency response: 20 - 20,000 Hz

Max. power: 100 mW per unit

Cable: 4,2 m

Weight: 270 g with cable

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