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A comment on Homemade Speakers. Parent comment

Re:Homemade Speakers by remmelt on Sunday July 06, 2014 @05:42AM (#7994135)
I'm very interested in the Arduino based pre amp. Do you have a page with your design that I can study? I was thinking about maybe integrating a Lightspeed Attenuator.

Most of all, I'd like the pre amp to automatically turn on the power amp (currently a Gainclone) when a signal starts coming in from the connected Airport Express.

http://diyaudioprojects.com/Solid/DIY-Lightspeed-Passive-Att...

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Re:Homemade Speakers by swimfar on Sunday July 06, 2014 @12:24PM (#7994875)
http://www.amb.org/audio/alpha10/

Here's another arduino-based pre-amp. This one includes relay-based stepped attenuators and input selectors. The pcbs are all available as well as the schematics in case you just want to use it as a base for your own project.

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