An advantage of Pleiades filters is that they can be connected one after the other

For example when each is inside an XLR female to male barrel adaptor.


This is because they are connected to pins 2 and 3 but pin 2 female is also connected to pin 2 male and same for pin 3. In other words the Pleiades filters are in parallel or shunt to the signal.


The microphone signal passes through in the usual way.


When connecting more than one Pleiades (R,L) filter does each retain its cutoff frequency?