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Dilshan R Jayakody edited this page Oct 30, 2021 · 3 revisions

This project introduces a digitally controlled 5.1 channel audio preamplifier system. This amplifier is specifically designed to increase the gain of the multi-channel PC sound cards.

This design consists of six TL074/TL072 preamplifiers, PT2258 electronic volume control, and PIC16F886 control circuit.