The Soundcraft A520.006000SP is an optional digital audio networking card designed for select Soundcraft Si series digital mixing consoles. This module integrates CobraNet technology into the console, enabling it to send and receive multi-channel, high-fidelity digital audio over a standard Ethernet network. CobraNet is a proven, packet-based audio networking protocol widely used in installed sound systems for commercial venues, education facilities, and houses of worship. By installing this card, an Si console becomes a powerful node on a CobraNet network, capable of interfacing with a wide array of compatible amplifiers, digital signal processors, and other audio devices.

The card installs into an expansion slot on the rear of the compatible Si console, instantly adding networked audio capabilities. It typically provides a configurable number of audio channels (e.g., 16x16 or more) that can be routed bi-directionally between the console's internal buses and the CobraNet network. This allows for flexible system designs where the mixer can be located at a front-of-house position while receiving audio from remote stage boxes and sending processed mixes to remotely located amplifier racks, all via a single Cat-5e cable, thereby drastically reducing the need for long, costly analog multicores.

As a spare module designated by the "SP" suffix, this product is intended for replacement purposes or for retrofitting an existing Si console that did not originally include the CobraNet option. It allows users to add this critical functionality post-purchase or to have a backup card on hand for mission-critical installations where system downtime must be minimized. The inclusion of CobraNet significantly expands the system integration potential of the Soundcraft Si console, making it a versatile centerpiece for modern, networked audio architectures.