What are all these metal cans/pods sitting on top of electronics?

I’ve tried Herbies Audio Lab Stabilizers (or two stacked). Pre, DAC or ss amp, but I always end up removing them after some time. Same outcome every time; a bit more clarity and delineation but slight negative affect on soundstaging (within, not overall size) and also a slight loss of the organic flow I have... It’s a fine tuning tweak that not all systems need or can benefit from. 

VPI brick blah blah honk honk.

 John Darko no.

The community will benefit from my most recent article for Dagogo.com just submitted a day or two ago. It will take on the subject of mass loading and several other tweaks. 

mass loading can help some equipment, can affect SQ

but as mentioned below... lots of streaming gear (and some phono stages) are small and light, need something on top to hold them down so cables can be attached securely and don’t shift stuff around

A bunch of us tried this tweak and it worked pretty good: purchase a big container of bee bees and multiple small plastic containers that measure 2”x 2”x 2” and fill this little containers with the bee bees. I placed multiple containers on each piece of equipment. A $20 tweak for multiple components.