SwitchEasy’s PowerAmp ($50) is a compact charger with four USB ports that can be covered for their protection. Each port is labeled — there are two ports allowing for 1-2.3A output, one iPad port (up to 2.1A output), and one iPhone port (up to 1A). PowerAmp can deliver a total max output of 5.4A — do the math on which devices you’ll be able to charge at full speed simultaneously — and the charger uses “automatic device identification” to intelligently and efficiently charge your devices. The square charger also protects against overcharging and power surges, and its input support for 100V-240V ensures that PowerAmp is world travel friendly, presuming you have a proper plug adapter — a standard AC wall plug connector is included.
We really appreciate PowerAmp’s design — it’s compact, and the port covers snap on nicely, ensuring that any USB ports not in use will be protected. The 5.4A total output allows at least two iPads, two newer iPhones, or four older iPhones (among other combinations) to charge at full speed simultaneously. SwitchEasy notes that the iPad and iPhone ports are specifically MFi-certified for fast charging. PowerAmp might cost more than some users are willing to spend on a multi-port travel charger, but for a small family on the go, or for users who always carry multiple devices, this clever charger is easier to tote than most of the competition, and its port covers are an added bonus.