HiFi Passive Preamp

HiFi Passive Preamp

30 November, 2015

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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 passive.
Only 5V power required.
Adafruit NeoPixel shows volume level with colour.
Sleep mode with low power consumption: 0.9W.

HiFi Passive Preamp – [Link]

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Arduino MCP23S08 MCP23S17 Preamplifier

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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