Sonic Barrier damping sheets vs cork


I want to dampen my Jolida J9 phono pre, and was wondering what would be the preferred material.
Sonic Barrier sheets from Parts Express or .125" sheets of cork?

markeetaux
In most applications I’ve tried lead it hurts the sound especially in the bass, makes it sound weird. And lead seems like SUCH an ideal material. Not too soft, not too hard.  Lol  Maybe you will have better luck than I.

Why not Sorbothane?  Mainly because Sorbothane is one of the worst materials ever foistede upon unsuspecting and gullible audiophiles. And it seems like the perfect material, right? Not too hard, not too soft. The only worse materials, if that's even possible, are lead and SONEX.
I used VMAX Damping Pads on my Jolida phono stage. The material is self adhesive and pretty easy to install. I also took the time to apply RF Shielding to the MC sections. I don’t have a clue regarding Cork and it’s acoustic values. Good Luck!