Bassists like Lee and Suire probably sound like Lee and Squire no matter what gear they have (as long as they have strings they like). I can emphasize just how much the player is responsible for their "signature tone".I'd hate to see someone spend a bunch of cash to try to sound like anyone, because if you have a laid-back approach and your hands don't work the bass hard, you'll never sound like a Chris Squire, no matter what gear you get. I think working on attack, the left hand techniques and your sense of riddim is where you get your sound.
Yup. I remember Rudy Sarzo talking about having the chance to play on John Entwistle's rig, and he noticed right away that he sounded just like ... Rudy Sarzo.