The Artison Nano Backpack P5 ultra-shallow surround sound processor/amplifier is easily mounted  behind  a  display  for  powerful  performance  from  a  barely  noticeable package, with multiple digital and analog inputs for maximum flexibility. The Artison Nano Backpack P5 is a compact, ultra-thin theater hub for the digital age. Measuring a mere 1.1” H x 11.75” W x11.5” D, Backpack is specifically designed for high performance home theater audio and ultra-simple installation; whether it is mounted on the wall, in the wall, or behind a flat panel display.