The ART Model 406 Six Channel Headphone Amplifier is made for professional, project and home studio applications. It has an output and level control for each set of headphones, and a stereo input for connecting the program source. The individual output jacks for each channel are located in front of the unit. Dual left and right 1/4" TRS inputs are located in the rear. The ART 406 is made for mounting in a standard 19" equipment rack, and is designed for fixed-installation live sound systems used by churches, clubs, DJ's, monitor systems, and home or project recording studios.