english : specifications: the phantom ii provides phantom power for one or two condenser mics. a three-way 12v/off/48v selector switch lets you choose 48v for mics rated at 24 to 48v, 12v for lower-voltage mics or off to conserve battery life. the power led goes out when the unit is running on batteries and switched off, but remains on while an ac adapter is in use. low-noise operation is featured in all modes input connectors: 2 x xlr female output connectors: 2 x xlr male required batteries: 2 x 9v optional ac adapter: 12v dc (i use a multi adapter from radio schack) size: 5.625 x 1.75 x 3.625 inches (144mm x 45mm x 92mm)