Also good to call out the better digital reverb units do this:

1) Split analog signal

2) Pass through one side to output (probably with a signal boost)

3) Take the other side & digitize

4) Apply effect to digital signal

5) Convert output digital signal to analgo

6) Mix into the output of step 2

I find this to be a very audible difference.

But what changes in a digital spring reverb is not that you switch some analog circuitry for digital. Either you simply attach a DAC to the input and an ADC to the output, but that doesn’t really mean that you get rid of analog circuitry. Or more likely, you’re replacing mechanical parts for a software model that achieves a similar sound. What’s interesting in that is not that you go from analog to digital, but from real mechanical equipment to a software simulation.