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 rugged, compact, and portable unit. Innovative low power circuitry generates the higher voltage necessary for powering microphones while maximizing battery life. The Phantom II Pro installs inline between your microphone and a balanced line input on your gear. Balanced lines offer increased immunity to external electrical noise, such as hum. Since a balanced system minimizes induced noise, it is the preferred method of connecting audio gear, especially when long lengths of cable are used. The Phantom II Pro is an invaluable tool in application areas including (but not limited to): home or professional recording studios, live sound, PA, permanent installs, DJ, AV, podcasting and broadcasting. For use with mixers, audio processors, digital audio workstations or anywhere you need phantom power for the mics.