SAS products are based around a robust flexible mixing matrix that can interconnect to Rubicon mixer control surfaces, digital storage, IFBs, talkback stations and other matrices. They are ideal for integrated mixing, transmission and monitoring applications. Systems are flexible and scaleable. You can build a standalone digital mixing desk or roll out a multi-layered scheme incorporating mixing, routing and talkback all in one system. Matrices can be small (16 x 16) or expanded into much, much larger entities. The key design objective in an SAS system is the simplicity of inter-area, network-based connectivity, essential in today’s ever changing media environment.

At the heart of an SAS routing system is the 32KD network hub, which can be configured as a router for programme and talkback and as a switcher for the RIOLink units that interface mixing desks. Internally, all digital audio is based on TDM technology, which minimises any adverse effects caused by multiple sample-rate converters. The design embodies "distributed liability", where the system is organised so as to provide multiple layers of redundancy. Component failures affect only a small section of the system, and even that is protected. Redundant power supplies, communications and control interfaces are employed throughout the SAS architecture.

Using the RIOLink unit, programme audio enters the system through high performance A/D interfaces or AES/EBU adapters. Outputs have their own independent DSPs: this approach negates the need to have common DSP 'farms' common in other radio mixers and which present a serious point of weakness. Indeed robustness and reliability are the foremost criteria in the design of all SAS equipment.