Microlab 2 +1 Amplifier circuit used in the 6331 model-amp ICs TDA2030A TDA2030A bass output at the 2 bridges connecting the power is used only integrated for enhanced RL. Bass TL082 op amp filter used on floors. 2x13v 100w... Electronics Projects, 2.1 Microlab Amplifier Circuit TDA2030 "audio amplifier circuits, ic amplifier, " Date 2019/08/03