4JPM V2.0 Schematic
The 4 Way Jack Patch Module comes factory default with a normalizing switch on the RED side jack channels to either mute inactive signal lines (when used with a MONO cable) or to loop back FX loops (when used with TRS/STEREO insert cable). In rare cases, it could be required or preferred to disable this feature. Once the feature is disabled, it cannot be re-enabled. Please follow these instructions if you wish to disable the feature: