What is the threading of the microphone mount? Can it be attached to a boom arm?
The thread size of the mount is standard 5/8". To attach the mic onto a scissor arm stand with a 3/8" threading, you need to screw the 3/8" to 5/8" adapter that comes with the K670 package to the mic mount.
Which shock mount and pop filter fit on the FIFINE K670 mic?
Most shock mounts on the market are designed for microphones without a volume control. Thus, we recommend getting a shock mount from FIFINE microphone accessories.
As for the pop filter, you can just find one on Amazon with the highest ranking or the most reviews. If you fancy getting a U-shaped pop filter, just buy one that fits a 48mm diameter microphone.