Yeah the Rev D works if I remember correctly, just the back end of the 4.1 hangs over the top seeing at it has more pins. Nothing additional is needed compared to the 4.0, just I created a PCB to mount everything to, including a switch and a...
Personally, the way i removed the ticking noise from my audio clips was to change to a Teensy 4.1 and use the onboard SD card reader, was much better and super smooth. I also made my own PCB to mount everything to, so the only manual wiring was...