Audio amplifiers

Details Audio amplifiers Audio amplifiers

1990-01-18

1992-06-30

Isen, Forester W.

Electrical audio signal processing systems and devices

With amplifier

381 98, 381 61, H03F 2100, H03G 300

Patent

active

051270595

ABSTRACT:
A pre-amplifier for musical instrument audio signals which utilizes a solid state programmable logic device to control a plurality of solid state switches for routing the audio signals in preselected manner through successive stages of vacuum tube amplification.

REFERENCES:
patent: 4495640 (1985-01-01), Frey
patent: 4701957 (1987-10-01), Smith
patent: 4935875 (1990-06-01), Hayashi
The Audio Cyclopedia by H. M. Tremaine, 1980, pp. 548-550, Model LA-2A leveling amplifier.
Noll, FET Principles, Experiments, and Projects, 1975, pp. 221-223.
Lancaster, CMOS Cookbook, 1979, pp. 349-355.

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