These connectors are prepared to work with Balanced Signal. Some balanced connectors are: XLR-3, JACK 6.3 TRS, JACK 3.5 TRS, BANTAM.

Pin designations:

XLR-3: Positive Signal: pin 2, Return Signal: pin 3 and Shield: pin 1.

BANTAM: Positive Signal: Tip, Return Signal: Ring, Shield: Sleeve.

JACK 6.3 TRS o JACK 3.5 TRS: Positive Signal: Tip, Return Signal: Ring, Shield: Sleeve.