What does “Cap” represent in the True-Z settings?
When set to an impedance value “+ Cap”, capacitance is switched into the circuit that alters the resonant peak and high end roll off of your signal. As with the input impedance, the effect to the sound and feel of the guitar signal is dependent on the electronics of the guitar (pickups). It was added originally to the 1 MΩ setting to provide an option that more closely matches the input ofan actual tube amplifier. In the end, we added it to all the impedance values simply to provide more tonal options.
