This would appear to show that the Herzan is effectively modifying the music signal playback due to the vibrations of the stylus by imparting a corrective response that has taken into account stylus vibration generated into the platter/TT.
Not so....
The added vibrations with music playing is purely Airborne Sound Transmission.
HERE is a readout with the Isolation ’OFF’ a record playing but the sound MUTE.
And HERE is a readout with the Isolation ’ON’ a record playing and the sound MUTE.