Apparently a lot of the stuff those people used was exactly from 1963. Take for example The Beatles Vox A.C 30 amps or Stevie Ray Voughan’s famous Stratocaster or Stevie’s Fender Vibroking amps that helped to create his signature sound.

I don’t know if you had a chance to watch these You tube videos under the title shreds….basically they are videos famous guitarists and bands playing live but the guy behind it switched the original soundtrack to his recordings of guitar and other instrument playing (usually very different from the original in a bad way!) but perfectly synced with what you see……anyway I think