Review on π Onyehn Amplifier Module for Arduino with 5V and 12V Support by John Bennett
Ideal for small headphone amp
Used for mono line-to headphone amp. This part comes in two versions, a 20 gain and a 200 gain. The 200 gain version adds two capacitors and a gain feedback resistor. I only needed a gain of 20 so I just trimmed the trace from pin 1 to cut off the excess parts. All of this is well documented in every lm386 datasheet. It works great - good sound quality with low noise. More than enough for headphones.
- Built-in 10K variable resistor, gain volume can be adjusted
- Can't remember
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