Tag: MCP23S08
![HiFi Passive Preamp HiFi Passive Preamp](https://www.electronics-lab.com/wp-content/uploads/2015/11/IMG_0036-e1448881858151.jpg)
Audio
HiFi Passive Preamp
FutureSharks @ github.com has build a very nice HiFi passive preamplifier controlled by an Arduino board. It has the following features: Volume control and input selection via encoder and Apple remote. Uses a 256 step R2R relayed based attenuator. Completely...
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