Sonifex RB-SS10 is a 1U rack-mounting unit that produces a stereo analogue audio output from ten selectable stereo analogue sources. There are ten illuminated push buttons on the front panel, which select and indicate the current channel selection. The selection and indication is also available through a remote connector on the rear panel. As well as being able to act as a source select module, the RB-SS10 can act as a mixer, by enabling the mix mode (using the “remote” input). The front-panel headphone output has its own volume control, which is independent of the level adjustment for the main outputs, and has a maximum output level of +12dBu. The volume control can be made to alter the output level of the main XLR outputs also, by using a switch on the rear panel to enable/disable this feature.