Providing power to the JC37 microphone is the Tonelux 37-PSU, a variation of the Tonelux universal tube microphone power supply, which with its adjustable B+ and heater voltage – along with selectable heater elevation can be configured to operate nearly any vacuum tube microphone in existence.
 
I/O for two JC37 microphones is provided for stereo/dual miking capability, meaning the mics are available in pairs, or that a second JC37 may be purchased at a later time, without the additional cost of another PSU.