The AS 40 is an improved replacement for the seasoned ARRISUN 40/25. It uses the same TRUE BLUE housing as the M40 and is thus of the same size, but over 3 kg lighter than the older ARRISUN 40/25. Since the accessory diameter has stayed the same, all existing lenses, barndoors and scrims can be reused. Like all TRUE BLUE ARRI lampheads, the AS 40 implements cross cooling and allows thus safe operation even at extreme tilt angles. The electronics housing is spaced apart from the actual lamp housing to keep temperatures down and prolong the lifetime of electronic components. It is easy to open and to maintain.