doubles the horizontal frequency of PAL, ECS and Euro36 screen modes to 31.5 kHz
removes flicker of interlaced screens
cannot handle Super72
connects externally to the 23 pin RGB port - it needs about 6 inches of space behind the Amiga
being an external unit, it has to encode the RGB signal, flicker fix, split to RGB and sync again - this reduces the quality of the video signal slightly producing some vertical banding through solid colours and a blinking effect when moving solid objects around the screen