The UA-25 is a powerful USB Audio/MIDI interface designed to offer premium sound quality, rugged durability, and complete portability for computer-based audio engineers. The UA-25 is compact enough to travel anywhere you can take your computer. The UA-25 is constructed of high-grade aluminum for the chassis; it can withstand hard impacts that are normally associated with traveling or working in the field, and the aluminum is an excellent shield against high-frequency interference from other electrical components. The UA-25 is USB powered, so you never have to plug it into a wall socket, but it can still power condenser microphones with its 48V phantom power. The seasoned audio professional will love the UA-25 for its ability to output audio at +4dBu from the balanced 1/4" outputs, making it the best portable audio interface to shuttle between the field and the studio.