@n80, I guess the answer regarding cones is "it depends." If the table and platter are heavy and built to specific tolerances, then cones would work to drain vibration from the TT. If your Sony is lightweight and made of plastic, then there may be no audible advantage.
If you have any type of footer available to you, try using 3 of them and see. They should be made of a hard substance and not pliable. If the result is more "air" and better dynamics, then the cones/footers have made a difference.
Many members report positive results using Vibrapod Cones...
https://www.amazon.com/Vibrapod-Cones-Support-Vibrapods-Sold/dp/B00E1P5O74/ref=asc_df_B00E1P5O74/?ta...
How does your analogue setup sound to you? Are you playing records that have been cleaned?
If you have any type of footer available to you, try using 3 of them and see. They should be made of a hard substance and not pliable. If the result is more "air" and better dynamics, then the cones/footers have made a difference.
Many members report positive results using Vibrapod Cones...
https://www.amazon.com/Vibrapod-Cones-Support-Vibrapods-Sold/dp/B00E1P5O74/ref=asc_df_B00E1P5O74/?ta...
How does your analogue setup sound to you? Are you playing records that have been cleaned?