Best current footers for preamps?

Symposium Acoustics " FAT PADZ ".

Get 3 for $189 and mount them under the pre-amp in accordance with the provided instructions. Unlike most footers FAT PADZadz also provides isolation  from the table or rack on which it is mounted.

Fat Padz by passes the Pre-amp's feet. The flat bottom of the Pre-amp rests on the flat top pf Fat Padz. It is not necessary to remove the preamp'sfeet.

It is available from the manufacturer or from the cable Company.

Freedom from vibration is an essential, but often underrated or neglected, element for realistic audio reproduction.

FAT PADZ is the way to go.

 

FAT PADZ  is effective against:

Vibrations in the component caused by airborne energies (eg. from loudspeakers) or from activities within the component(eg. transformer
vibrations)

Vibrations from the shelf or rack on which it rests.

FAT PADZ is constructed like a sandwich. The "meat" in the sandwich 
transforms vibrational energies into heat.  The 2 outer "breads" are made from highly polished stainless steel. The top one transforms energy from the component into the sandwich. Stainless steel is used because it is such a good conductor of energy. This is why most professional cooking
pots are made from stainless steel. The bottom one not only transfers
energy into the FAT PADZ but also damps the shelf itself, thereby reducing the amount of spurious energy imparted by the shelf or rack.  

While on this topic I should mention that the top of most preamps are made from materials that vibrates a lot. Knock it with your knuckles and it rings like a bell. This situation smears music and needs to be separately addressed. There are several ways to deal with this at very little expense
Years ago I used Dynamat which does a good job. I now use Walker Audio's one inch ( 1" ) resonance control disc available from walkeraudio.com for $75.00 and worth every penny..