18v 5A DC or larger to 48v should not hurt the amp. *I am not absolutely sure on the 18v minimal encouraged amperage ranking for your chip, but 3A or even more should get the job done. ryanmh1 explained: EDIT: Most up-to-date products are "wonderful" or "fantastic" with the "most https://www.qavendors.com/qa-testing-services/displays-holders