One reason why analog synthesizers are so popular in these modern days in my opinion is the fact that they don’t work every time like expected or surprise you in a way like a VST instrument won’t. Attenuators (or potentiometer also called) for example work in a mechanical way. In consequence every unit acts a little bit different and will change their behavior over time regardless the high industrialized production quality. You can easily realize that by using the Main Tune knob: it has a midway indent which isn’t precise enough to land on the same frequency again once you turned it. In my humble opinion this indent makes not much sense on this pot but since you have three additional knobs to tune the two oscillators it isn’t a problem at all. There are eight attenuators with midway indent altogether used in the Synvoiz and some of them can influence the sound while sitting in their neutral position because of these little imperfections. The best illustration I found so far is the CV 1 pot at the filter section. Default the LFO 1 is routed there. I recorded a standing bass sound with no modulation dialed in – CV 1 in center position.
While recording this I turned the LFO 1 frequency slowly up and you can hear that very clear in a change of harmonic content. The solution for this is pretty simple. Just plug a spare cable into the CV 1 socket. Now the sounds stays stable:
As long as the source of prerouted modulation is only slowly changing in time the variations in sound might appeal to most users. If you have trouble to understand a certain aspect of your sound and suspect an ongoing “secret” modulation just plug a cable into the according socket to bypass the routing.