Palmer PAN 03, Active DI Box, Size: 19""/1U, 90 mm deep, 4 Channels, XLR output is also available as a parallel port on the back, The active circuitry allows for a high input impedance of 1 Mohm and greater sensitivity of the input signal (typical difference between in and out: -4 dB), Max. output voltage is +10 dBu with phantom power, Transformer balanced output, Via a special ""floating ground"" circuit the ground lift switch functions even with phantom power, Mains adapter is firmly connected to the device, 5 Year manufacturer's warranty