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Raspberry Pi Class
It does matter which side you plug in your guitar and which side you plug the amp. Its not going to work if the signal goes in the wrong way. it is supposed to enter through the Base of the transistor. However If you really want the input jack on a certain side, just put it there. Some pedals have the jacks on the back of the box.
You can probably use the colors to show the amplitude of the given frequency in case its getting too hot.
Dude that foken awesome man!