We've structured our product pricing around this idea so we can give you the most product for your money. This is our business model. Were very accessible, if you don't believe us, email us now and see how fast we respond. Many of our customers are overseas and wouldn't benefit from phone service anyway. Sure, every module that requires calibration comes with calibration instructions.
Many modules require no calibration at all.
They are used to supply low frequency control signals to filters, amplifiers and other modules in a system. LFOs usually have a limited number of waveforms and are not voltage controlled in order to save costs. Instead of creating a separate LFO module, we decided to make the voltage levels in our system so that a standard oscillator would work as an LFO also. Like most issues concerning synthesizers, and music in general, there are different opinions. The idea of wasting your Oscillator on simple modulation doesn't make sense.