Very good device. iPad and iPhone at the same time load is not a problem. There are two USB Ausgansbuchsen available. One with an amp, the other with two amps. If not so warm and make no noise. It should be noted that the device illuminates quite strong and although green. Looks to be not bad, but at night could disturb. Then best behind a shelf or desk provide ;-)) Now I have two of these devices are in use. The first for the second year, no problems .....