I always wonder about CV — how much is voltage drop due to cables and connections? Is there a measurable detuning? (I'd love if there was a cheap digital versi

I always wonder about CV — how much is voltage drop due to cables and connections? Is there a measurable detuning? (I'd love if there was a cheap digital version of patching using e.g. I2S and with 1 sample delay per node, but no such thing.. )