Palmer PAN 03 Passive - 4-channel passive DI box., Trafosymetric XLR Output, Input Sensitivity Adjustable, Input Impedance: 68,000 ohms, Output Impedance: 600 ohms, Transformer Ratio: 10 : 1, Maximum Output: +6 dB, Ground lift switch, Dimensions: 19"/1U. 5 year warranty.