For analog volume levels, adjust the standard volume control on the external electronic device (ex; amplifier) that is plugged into the ¼â âInstrument Outputâ jack on the back of the Synthony II to the desired volume level. NOTE: Remember, the âE-Seriesâ button on the front panel of the Synthony II must be PUSHEDâIN (showing white through the clear top of the button) in order for instruments with E-Series pickup systems to function properly with the Synthony II MIDI Controller. TRACKING ENHANCERS Included with each Synthony II is a set of black rubber tracking enhancers for installation on the Zeta instrument that will be used as the MIDI controller. Separate installation instructions are included with the enhancers, with directions for application of the proper gaskets to each type of Zeta pickup system. The use of the provided tracking enhancers is essential for optimum performance of the Synthony II MIDI controller. The gasket applied under the strings at the nut minimizes unwanted harmonics and overtones of the vibrating strings, preventing mis-triggering and enhancing tracking speed. The enhancer applied under the pickup serves to eliminate unwanted body vibrations and overtones, and minimizes âcrosstalkâ between the pickups of the individual strings. The use of tracking enhancers may affect the tone of the instrument in analog applications. Installation of the gasket set does not need to be permanent, although the gaskets must be installed for proper performance of the Synthony II and it is not recommended to remove or re-install them un-necessarily. 11 ZETA Music Systems, Inc. ZMC-200 Manual Rev2.0