For each channel there is an input gain and a threshold level control. With the limit threshold set to maximum, the input through to output can be normalized using the input potentiometers. The power LED indicates limiting by flashing. The RBSM2 is a dual stereo to mono converter. It consists of two independent converters, which produce two fully buffered and balanced mono line outputs from two stereo inputs.
All connections are on the rear panel.
The XLR-3 inputs are electronically balanced with an impedance of 20kohm bridging. These can be wired unbalanced to accept an output from domestic equipment.