I purchased this for the main reason of converting from 220 to 110 volt for my older Bose 'Wave" CD/AM/FM unit that I had brought from the states to Portugal. It has worked exactly as advertised so I am very happy to have my music back! Yes, the unit is a bit big being about the size of a large toaster but that doesn't bother me. I only have the Bose plugged into it so there is none even a hint of the unit getting warm....I don't know how warm it would get with more things plugged in. Overall, I am very happy with the unit as well as the communication and shipping from Vevor, especially since this was my first EU purchase.