The RB-BL2 is a bi-directional stereo unit for interfacing domestic or semi-pro unbalanced equipment to professional balanced line levels and vice-versa.
All connections are on the rear panel. The two XLR-3 electronically balanced inputs have an impedance of 20k bridging and are routed to two unbalanced RCA (phono) outputs with an output impedance of under 50.
The two RCA unbalanced inputs have an impedance of 10k and are routed to two balanced XLR-3 outputs with an output impedance of under 50.
The output gain can be individually adjusted for left and right channels by using pre-set potentiometers accessible through the rear panel.