You want to make your turntable as acoustically dead as possible. In a mechanical pickup system 

such as in a turntable, the job of the cartridge is to translate the modulation in the record picked up by the 

stylus and convert these mechanical vibrations into electrical signals that are amplified by your system

and turned into sound by your speaker system. These acoustical vibrations are the only ones you want

to hear and avoid as much as possible any other type of mechanical vibrations such as reflections or 

modulations induced by the record itself, or from  the platter,  tone-arm, plinth, motor or any acoustical
feedback from your speaker system.

Sound, mechanical and electrical waves interfere with each other, they can cancel or augment from

interacting, depending if they are in or out of phase, making some waves disappear and others to increase 

it's size, distorting the original recorded sound, that is one reason, why your stylus when exposed to 

vibrations that are not present in the recorded surface deteriorates the quality of reproduction, translating

into muddiness and lack of detail to name a few.

and improved your system, you'll be able to play records that you're already familiar with, and realize that 

you're hearing more individual notes than before, bass notes will be tighter and cleaner, mid-range and

higher notes become much more distinct, you will  hear that each note has a beginning and an end, in many

cases experience a fuller sound with stronger bass.