Are you looking to enhance your audio recording or live performance capabilities? The Soundcraft CAT5 MADI I/O Card is a high-quality, durable, and professional solution designed to expand your Soundcraft Si Console's input/output (I/O) capabilities. This versatile card is compatible with a wide range of Soundcraft consoles, including the Si1, Si1+, Si2, Si2+, Si3, Si3+, Si Performer, Si Compact, and Si Expression, making it a reliable choice for audio professionals.This robust card can establish a 64-channel MADI input and output, allowing for seamless connection to remote devices such as stage racks, other consoles, or even a Broadcast feed to an Outside Broadcast (OB). It features optical inputs and outputs provided on SC connectors, available exclusively in multi-mode versions, ensuring high-quality audio transmission.One of the standout features of this card is its auxiliary interface, which can be utilized as a redundant link, offering an extra layer of reliability during your audio recording or live performances. Moreover, a handy toggle switch on the card allows for easy switching from 64-channel to 56-channel mode, ensuring compatibility with older MADI devices. In conclusion, the Soundcraft CAT5 MADI I/O Card is a versatile, reliable, and professional choice for expanding the I/O capabilities of your Soundcraft Si Console, offering compatibility with a wide range of digital audio devices.