The palmer 20 channel press patch box is a thoroughly professional patch box and signal splitter which allows you to get 20 professional grade balanced audio signals from 1 input. The palmer press box has been specially designed for use at press conferences and has many features to make it perfect for this application. The 20 outputs have their grounds isolated by superior palmer transformers each with an individual ground lift switch allowing for unparalleled audio consistency across the 20 channels even when dealing with a variety of output destinations. The press patch box can also effectively handle a variety of signal sources due to the microphone and line level inputs along with ample input gain controls. The stereo version of the palmer press box also offers a stereo line level input option.