The Cheapest DIY amplifier?
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I make a super cheap audio amp, possibly the cheapest you can DIY. It is built around a ridiculously priced IC I found online, and when I saw it costs just 4 cents (that's $0.04), I knew I had to give it a try.
The good news is that the chip works well, despite its low price, and with a few extra components, it can be turned into a cheap amplifier module or become the audio side of a more complex build.
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