Electrical audio signal processing systems and devices – Headphone circuits
Patent
1990-04-06
1991-05-21
Isen, Forester W.
Electrical audio signal processing systems and devices
Headphone circuits
381120, 381118, H04R 110
Patent
active
050182048
ABSTRACT:
The present invention relates to a musical instrument amplifier which is particularly useful for electric guitars. The amplifier has a rigid body for housing both the electronic system for amplifying and processing signals from the guitar and the system's power supply. An input plug connected to and projecting from the body is electrically coupled to the signal amplifying and processing system. When the plug is inserted into an output jack for an electric guitar, the body is rigidly carried by the guitar, and the guitar is operatively connected to the electrical amplifying and signal processing system without use of a loose interconnection cable. The amplifier is provided with an output jack, into which headphones are plugged to receive amplified signals from the guitar. By eliminating the conventional interconnection cable, the amplifier of the present invention can be used by musicians with increased flexibility and greater freedom of movement.
REFERENCES:
patent: 2186072 (1940-01-01), Huth
patent: 2826644 (1958-03-01), Pease
patent: 4085365 (1978-04-01), Reick
C. B. Labs, Inc.
Goldman Michael L.
Isen Forester W.
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