Palmer PPB Press-Box - active distribution system with 2 inputs and 20 outputs (with transformers). Audio signal distributor intended for use at press conferences with separate inputs for microphone and line signals, signal monitoring is provided by a 10 LED strip displaying a range of -40 to +10dB. Designed for use with 8-200W headphones. Transformer balanced XLR outputs. Dimensions: 19"/3U. Includes 5 year warranty.