Logic supports the multiple outputs of the EXS24 and VST 2.0 compatible instruments that are capable of addressing multiple outputs. In addition to the "Mono" and "Stereo" submenus of the Audio Instrument menu, a "Multi Channel" submenu lists all Instrument that offer multiple outputs. A plug-in needs to be inserted from the "Multi Channel" submenu, in order to access its individual outputs.
Please note that not all plug-ins (both Emagic and third-party) are multi-output capable. If the Instrument does not appear in the Multi Channel submenu, it is not equipped with multiple output facilities. Please make sure that the instrument you wish to use, is properly installed and authorized.
The first two outputs of a multiple output instrument are always played back as a stereo pair by the Instrument channel into which the plug-in is inserted. Additional outputs (3 & 4, 5 & 6 etc.) are accessed via the AUX Objects