How to Make a HiFi Passive Preamp #MusicMonday

Hey Max – thanks for sending another great project in! Max writes: Photos, GIFs, Arduino code, PCB layouts and 3D drawings for a HiFi passive preamplifier. Full build details in DIYAudio forums:http://www.diyaudio.com/forums/analog-line-level/275446-passive-preamp-arduino-based-remote-control-relay-r2r-input-selection.html Read more on DIYAudio or GitHub.