The Phantom II Pro is designed to do one thing and do it well. It provides clean, reliable phantom power for one or two condenser microphones in a robust, compact and portable unit. Innovative circuits produce the higher voltage required to power microphones and maximize battery life. The Phantom II Pro installs inline between the microphone and a balanced line input on the equipment. Balanced leads provide increased immunity to external electrical noise such as humm. Since a balanced system minimizes induced noise, it is the preferred method for connecting audio devices, especially when long cables are used. The Phantom II Pro is an invaluable tool in applications including (but not limited to): home or professional recording studios, live sound, PA, permanent installations, DJ, AV, podcasting, and broadcasting. Use it for mixers, audio processors, digital audio workstations, or anywhere you need phantom power for your microphones.