The ART HeadAMP 4 Pro - Five Channel Headphone Amplifier With Talkback is designed for home and project studio monitoring as well as conferencing within communication networks and teaching applications. The device features five stereo headphone outputs on 1/4" TRS connectors with separate volume controls. For inputs, the unit features a pair of 1/4" main inputs as well as four stereo auxiliary inputs on 1/4" TRS connectors. A rear panel 1/4" footswitch input enables connection of a footswitch that can turn on and off an internal talk-back microphone or an external microphone connected to the front panel XLR microphone input with phantom power. Front panel push buttons allow you to select which headphones are listening to the source material and which headphones can hear the talkback channel.