SONIFEX RB-BL2

Second-hand, in good condition, without original package.
Active adapter XLR/RCA - RCA/XLR

RB-BL2 Unbalanced to Balanced Bi-Directional Converter
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.
The two XLR-3 electronically balanced inputs have an impedance of 20kΩ bridging and are routed to two unbalanced RCA (phono) outputs with an output impedance of 20kΩ balanced bridging
Output Impedance (RCA):