This is an audio expansion board for the POET 4 system. This board doubles the audio processing channels of the POET 4 and adds an additional 16 Analog output channels. This board also has 32 PAL output channels and 16 PAL input channels. These can be used to send digital audio to remote locations. This board can also be used in a “stand alone” mode for receiving PAL audio with the ability to process it for use in a unique location.