The PA-1 accepts either balanced or unbalanced stereo, line level signals through parallel XLR and 1/4" TRS inputs.
A switch changes the input connector configuration from separate balanced inputs to combination unbalanced (Tip/Pin2 = Left, Ring/Pin3 = Right) for accepting signals from sources such as headphone jack outputs.
Powered by two 9 volt batteries that load into easy access drawers or with external AC power supply (included).
Headphone distribution systems
Sign language interpretation or language translation (The superior sound quality will reduce ear fatigue when working over extended periods of time)
Adding headphone monitoring to any piece of audio equipment
Boosting weak headphone output in high SPL environments