This permits standard ‘stereo’ wired headphones to be used to monitor sources on B-gauge jackfields that are wired to the usual tip=A leg, ring=B leg, sleeve=screen balanced line convention (ie without grounding the A-B pair centre point). A 300mm length of heavy duty twin screened HST-R cable, with Neutrik NP3TB B-gauge plug at one end, wired ‘balanced’, and Neutrik in-line 1/4 inch jack socket the other, wired ‘stereo’. The headphone socket is clearly engraved ‘JACKFIELD LISTEN ONLY’ to avoid erroneous usage.
Jack plug tip connected to socket tip and ring
Jack plug ring connected to socket sleeve
Jack plug sleeve not connected.
Cables to other wiring conventions can be made to special order.