I don't know how all you reviewers managed to plug this thing in. Mine arrived with no UK power supply but instead a power lead for some other country with a style of plug I didn't even recognise. Nice going, Amazon!
I was so pleased to find speakers for my beloved Kindlefire but Amazon needs to change this product listing. The Kindlefire does not fit where it needs to fit in order for the usb socket to be in the right place. The arms are too small and even if it did fit it would obscure the speakers.