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Preliminary Amplifier Built on Microcircuit Model K157UD2 Manufactured in Russia

Published 05.01.2012 Presenter Valerij Kharybin

Preliminary Amplifier Built on Microcircuit Model K157UD2 Manufactured in Russia
A preliminary amplifier is an electric device amplifying signals to be further processed by the power amplifier. Low-current signal sources include the following devices: microphones, pickups, players, receivers ...