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HiFi Passive Preamp

HiFi Passive Preamp

FutureSharks from 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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