Two separate jacks or one tip-ring-sleeve jack on a mixing board that allow the signal to be routed from the input channel, to an effects device or signal processor, and back into the input channel. Inserting a plug into the access jacks breaks the signal flow, and allows the inclusion of a compressor, exciter or other device.
ACCESS JACKS
Meaning of ACCESS JACKS in English
Guitar English glossary. Английский словарь гитарных терминов . 2012