BS 48 i
The battery unit supplies one microphone with 48 V phantom powering (P48). The maximum supply current is 5 mA.
The audio output is dc-free. Therefore, no transformer is needed when connecting to unbalanced inputs. The cables couple to the BS 48 i through XLR 3 connectors.
Maximum length of operation depends on the type of battery and the current drain of the microphone. A microphone requiring e.g. 2 mA can be operated at least 20 hours with one alkaline battery.