There is no "balanced mono TRS connection" A TRS connection is a balanced connection and can pass a stereo or mono signal. A mono minijack is only TS (tip-sleeve), and you cannot use a stereo mic with such a connection (probably get just one side of the mic). A balanced signal requires a shield. A stereo signal requires a separate path for Left & Right channels + common, that's 3 wires. Which, in effect, would be using the shield, and therefore be an unbalanced stereo signal, but the minijack must still be TRS. I can logic that the shield is common, but just want to get the Left-Right correct. Thanks for your reply. Cheers, Jason