I can't seem to find them, and I want to enter the droid tomb on Korriban, so where can I get them?
im pretty sure you dont actually get 'sound suppresors'... you have to look for sound dampening stealth belts.
There should be the corpse of a Sith Soldier just inside the tomb - if you loot it, you'll get a Sound Dampening Stealth Unit. As JIGOS says, that's what you need. Equip it to your party leader and hack your way through to the droid.
huh, i don't remember anything about this except i DO remember going in to rip apart some droids. maybe i already had it equipped? whatever