inductor + resistor parallel or series circuit question

[boratto]

i am wondering what happens if use inductor + resistor parallel, in a power supply filter circuit, like Huminator, instead just the resistors? And in series?

[IvIark]

It would create an RL series filter.  Basically the same theory as the RC filters you see more often in these circuits.  Inductors are a bit of a pain to use because the reasonable size ones are in very low values and so you need very low resistor values to use with them to be in a useful frequency range which seriously reduces your options.

RC is a much better choice for us.  The common values can make filters over a wide, useful frequency range with common resistor values.  This allows us to use pots to good affect in these pedals and make a big impact on the audio frequencies.