This is a good thing and much better than what I’m doing now.
It also should be noted that using passive components to create the BSC like the stock interface does also results in an uneven phase response. So the stock interface box does not have a flat phase response even when no EQ is applied. So with my interface combined with the FIR BSC, folks will finally be able to hear how these ribbons sound with a perfectly flat phase response. Something you certainly want from single driver systems. A flat phase response is one of the big reasons folks like full range driver speakers.