[1Happyman]

Hello... I want to introduce myself.  I am the proud 2nd owner of some Sapphire M4's.

I love these speakers and the huge open sound they deliver.

My question is what have other owners used as effective isolation footers?
Also... does anyone know what the thread size is for these speakers.

Thanks,

1Happyman

[Spatial Audio]

Congrats on the M4 Sapphires! If you are asking about the thread size for the spike footers, that should be M6-32.
If you change the feet, please be careful you don't make them unstable. They were designed to be tilted back.