is Kali reclocker compatible with raspberry pi ZERO W board?
No. And I definetely suggest using Volumio with a PI 3, and avoid pi zero (really really slow)
Yes, it works fine.
Volumio 2.296 RPI zero w , kali, muc89 (de.muc89.com/sabreberryz)
i would recommend not to turn on upsampling.switch album cover off and no background image.
Power must be connected to kali!
kind regards