So, I had a task of creating a music system for a cow farm. A lot of farm equipment manufacturers make such a system, but it has many drawbacks - it plays music from their servers and it costs so much that it is unbelievable. Also, people have reported reliability issues. So, I got to work, using Arylic AMP boards and some inexpensive PA speakers from Thomann. Everything was mounted in a IP65 enclosure to prevent electronics from oxidation. This system is working reliable for a couple years now. Cows are happy, farmers love easy control and I have set up timed starts, using http requests from router.
Here are some pics from this system:
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That’s a nice setup! Happy cows produce more milk.
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Cows: Who wanna dance?
Cool. Now you can produce your own Mozart milk 
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Milk from cows raised on Mozart a hit even outside Awajishima isle
That is such a cool application. I had no idea cows liked music, now I’m curious what kind of music they like best and is there a cow channel.
do they play it all the time?
Thanks!
They mostly play jazz and classic. Anything
that is smooth and relaxing. Radio starts in the morning and stops in the evening by http api requests automatically.
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Cows are happy 
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