TDA2030A 14 W Speaker Amplifier

Turn a line-level audio signal into 14 watts of bookshelf-speaker output with one heat-sinked chip and a handful of resistors.

Difficulty: Through-hole. Estimated build time: about 60 minutes. Estimated parts cost: about US$7.00. 6-part bill of materials with live supplier pricing. A discrete class-AB power amplifier built around the ST TDA2030A in its iconic Pentawatt-5 (TO-220-5) package.