This professional headphone amplifier allows the connection of a signal source both left and right via RCA connections (CD player or mixer) or connection with a 3.5mm stereo jack (computer sound card, mixer headphone output). All outputs are designed for stereo signals via 1/4" TRS. Each output has its own amplifier control, resulting in operation with extremely low noise, while each output also has its own volume control. There is enough signal gain to use this amplifier with almost any headphones. A stereo/mono switch allows the user to listen in stereo or mono. Ideal choice for studios, radio broadcasts, schools, or simply for listening to music at home.