Guitar effects schematics free. A phone connector also known as phone jack audio jack headphone jack or jack plug is a family of electrical connectors typically used for analog audio signalsthe standard is that a plug described as the male connector will connect with a jack described as female. The whole project is open source and open hardware all the schematics and files are free. I have added notes in red to the schematics believed to have errorsitems confirmed by me or others have an ok. The phone connector was invented for use in telephone switchboards in the 19th century and is still widely used.
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