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How to choose and test a power supply, and know if it is compatible with your pedal, keyboard or other equipment? Check out some tips in this video! Become a Partner of our channels! By making a small donation, you can value our work and become a partner, contributing to the growth of our channels. In addition, you can count on our help to answer your questions about your personal projects via email! Write to my email to find out how you can make your donation and become a partner! Email: [email protected] You can also send products to be tested in our videos! For our friends who want a Basic Electronics Course: https://go.hotmart.com/I8675434E