The SPA-470 is a high definition serial digital interface processing amplifier (Proc Amp). It will accept HD-SDI transport streams and give three processed outputs of the same format as the input. Finding a digital proc amp with the controls that you want can be difficult so Link has developed this product for you. The unit will modify the active area of the video through front panel controls or be controlled through serial or Ethernet. The unit will pass ANC data untouched including audio and captions to the output.