The RB-SS10, a 10-way stereo analogue source selector/mixer, is a 1U rack unit that produces a stereo analogue audio output from 10 selectable stereo analogue sources. There are 10 illuminated push-buttons on the front panel, which select and indicate the current channel selection. Selection and indication are also available via a remote connector on the rear panel. To prevent accidental front panel selection, there is a remote input to inhibit the front panel buttons.

Two of the stereo inputs are on XLR to allow hot-plugging of audio sources, for example, portable recorders. As well as acting as a source selection module, the RB-SS10 can operate as a mixer by enabling mix mode (via remote input).

The gain for the left and right inputs can be individually adjusted using preset potentiometers on the front panel. As well as routing the selected audio signal, the unit will also route a remote input signal via the remote connector to the selected input source, to start external audio equipment such as a CD player.

The front panel headphone output has its own volume control, independent of the level setting for the main outputs, and has a maximum output level of +12dBu. The volume control can be configured to also alter the output level of the main XLR outputs by using a switch on the rear panel to enable/disable this feature.

There is a designation strip on the front panel, useful for giving the buttons a meaningful description. The strip covers the input gain controls so that once set, they cannot be easily altered - ideal for installation work. The LED on the front panel is used to indicate that power is present on the unit.