Audio amplifiers
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United States of America Patent
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Jun 30, 1992
Grant Date -
N/A
app pub date -
Jan 18, 1990
filing date -
Jan 18, 1990
priority date (Note) -
Expired
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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.
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