Sonifex RM-4C8 Reference Monitor, 4 LED Meters, 8 Channel Inputs & Dual Source SelectorsWith 4 x bright high resolution 26 segment meter displays and separate left and right source selectors, the RM 4C8 is ideal for monitoring audio channels in an SDI group, or groups of de embedded The RM 4C8 offers the same functionality as the RM 2S4 but with an additional source selector so that any of the 4 channels in the selected group, or bank, can be monitored independently on left and right speakers. Also, 4 meters are provided so that every