Zerosum Inertia - Zi61

the zi51 is the metasonix r51 circuit, used with permission, redesigned to take 6ak5/5654 tubes (only use 6ak5 or 5654 tubes in this module) and added feedback.
the input knob controls the audio input level. distort controls the bias adjustment of the distortion level.
vca adjusts the amount of cv applied to the vca cv input.
you need to have a cv source applied to the vca cv input jack to get the most results from the vca knob.
feedback controls the amount of signal fed back into the input.
a modulation signal of at least 5v is recommended to insert into the vca cv input.
the module functions best when a modulation source is fed into the vca cv input to fully open the vca level of the module.
the distort and vca knobs interact with each other and the more voltage that is applied to the vca cv input the more effect the distort knob has when turned.
it is recommended to let the module warm up several minutes before operating and to start with settings as described:
level knob about halfway.
distort and vca all the way up(about 5 o'clock).
feedback off (full left/about 7 o'clock).

insert a modulation source of at least 5v into the vca cv input.
it is recommended to always have a modulation source patched into the vca cv input for louder volume and more range and response in knob turns.
get familiar with how the input level knob adjusts the behavior and sound of all the other knobs.
after you have that figured out start increasing the level of the feedback while decreasing the level of the input level knob.
get familiar with how the input and feedback knobs interact with each other.
usually a lower input level with a higher feedback level and distort knob between 10 and 2 o'clock have the most aggressive and noticeable obvious sound changes.