Passive 4-channel DI BOX in a 19" housing. Each channel has a jack input with a parallel output for looping the signal through. An attenuation switch (-30 dB) permits connection of a line or speaker signal at the user's choice. The specifications are identical with those of the PAN 01. All connections and switches are on the 1 U front panel; the XLR output is additionally present as a parallel socket on the rear panel.