You can approximate vintage guitar sounds without dropping ten grand at Gruhn Guitars. Gibson.com has posted 10 easy tips for getting classic sounds, including specifics of reverb and tremolo, low gain amps, and tone pots:
They may be the most underutilized element in the electric guitar’s construction. Roll back the pots and roll back the years to get into the Chuck Berry or T-Bone Walker zone and keep things bright to approximate the snappy sound of Lightnin’ Hopkins or Freddie King. Listen to the variety of guitar sounds on Jimi Hendrix’s records. He was an expert at getting everything tone pots offer.
Read it all at Gibson.com