I decided to go ahead and put both of these videos in the same thread since they are virtually the same. The only difference between the two is the DX400 is 100w more power and the DX400 has an extra 2.4a USB port. The lack of voltage still worries me a little bit though but not enough to keep me from using them with electronics that are NOT sensitive. Have a watch and let me know what you think about these inverters.