in some cases, it is great to have in your electronic lab a small audio amplifier that will help listening to the sound emitted by a device that you just built or are about to test.
The small amplifier becomes even more useful if it provides a variety of input and output connectors. In fact, this way, you can use it in any condition while working on your audio project.
And if you already have a loudspeaker box, like the one I presented in THIS YouTube video, it becomes even easier to use it, because they connect directly to each other.
For your convenience, here is the YouTube video on the Amplifier, and here is the ZIP file with the schematic and the files to make the case with your 3D printer.
Happy Experiments!
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