TELEFUNKEN Elektroakustik’s premium power supplies are hand-built in South Windsor, CT, USA with premium components including Signal Transformers, Nichicon capacitors, Neutrik connectors, double-thick circuit boards for structural integrity, and a PCB layout made to maximize current handling. They are built well over-spec to ensure reliability and safe operation for decades. Each power supply is calibrated to the specific microphone system it comes with. They are burned in as a full unit to ensure optimum performance and operation.

7-Pin U67 connector pin-out:
1 – Audio (+)
2 – Audio (-)
3 – Ground
4 – Heater (-6VDC)
5 – B+ (210VDC)
6 – Ground
7 – Ground