Turntable support definitely makes a difference to the sound.
How much and whether it matters is another question.
It can be very obvious, e.g. at one time I had a turntable on top of a chest of drawers. The chest of drawers vibrated along with the music which then caused feedback via the stylus and it sounded awful. Moved it to a shelf and the difference was quite dramatic.
Turntable support definitely makes a difference to the sound.
How much and whether it matters is another question.
It can be very obvious, e.g. at one time I had a turntable on top of a chest of drawers. The chest of drawers vibrated along with the music which then caused feedback via the stylus and it sounded awful. Moved it to a shelf and the difference was quite dramatic.