Palmer PPB 20 Press-Box, Press Box, Audio distribution, Is used for press conferences to distribute 1 red microphone to 20 send stations or recording devices galvanically separated, 2 x Inputs: XLR / f (one balanced input for microphone and line level, optionally switchable), GND lift switch, Outputs: 20 XLR / m, transformer-balanced with GND-lift switch, Nominal output level: +4 dBu at 0 dB, Display of the LED chain, Maximum output level: +20 dBu, Nominal output impedance: 300-ohm, 2 x Stereo connector balanced / unbalanced, nominal level -10dBu, 2 x RCA jack unbalanced isolated / ungrounded, nominal level -10dBu, Headphone output, Power supply +/- 12VDC or 230VAC, Size: 19