Townshend Pods - How many do I actually need per component for max effectiveness?

Hello,

Experiences from actual users would be greatly appreciated. I have a phono preamp (28lbs), amp (100lbs), linestage (20lbs), and potentially a DAC (6 lbs) that I am looking to get pods for. 

Should I get 4 per component or would 3, or even 2 work just as well/better? If anyone can share their experiences with the pods and experimenting with the number they used and what it did to the sound, I’d be thankful.