Vibration Control

[TDA]

Turntable has motor to drive the belt hence vibration is definitely there.

Exactly. There are no vibrations to dampen in an otherwise solid state system hence the absence of any audible improvement.  Looking at things from a scientific evidence perspective, the reason an earlier poster with high end equipment cannot hear a difference is simple: there is no difference to be heard and they are less susceptible to the placebo effect that these miracle pucks induce in certain listeners.

Before installing the pucks on my speakers, i didn't even have them on spikes. So getting my speakers lifted off the ground has offcourse helped. But the extra cm that the pucks raise them I simply cannot hear in my room. Maybe I can hear a better bass, but that can just be because off the extra height now when raised. A much cheaper puck could do the job

On the devs + streamer I simply cannot see and hear what these pucks brings to the sound. It's the same for me. And the price on only this upgrade is 4600 euros... Maybe it's me but right now it feels like a gimmick, for brands to sell to earn extra money..