Bests & Worsts Reviews from Amazon

If it seems to good to be true it probably is. This inexpensive power supply does NOT isolate the outlets. It doesn't offer any protection against ground loops and humming. There is absolutely no electrical isolation between the outlets on this power supply. See my video for a demonstration of the difference between the Donner DP-1 and a true isolated power supply. In the video, the larger power supply was hand built and is truly an isolated power supply. There is no continuity between any of the outlets. The Donner DP-1 is not isolated and has continuity between the power outlets. (You can also search Youtube for Donner DP-1 and find my video)