For specific applications it may be desirable to enhance the capacities of the R2 amplifier.
For certain applications it may be desirable to expand the number of zones, and for other applications it may be desirable to cover large distances, such as between different factory halls.
For these purposes, optional fiber interconnection modules are available that can be plugged-in internally to the R2 amplifier. They are capable of carrying 32 audio channels (16 stereo channels) over one single fiber line. The maximum distance that can be covered is depending on the used fiber module, 600m or 1200m.