a vintage sound is when you have an old set of pickups or an old amp that have been used allot i have a pair of antique pickups in one of my 335's and they are great. and my fender twin (1965) sounds incredible. the sound is created when currant is passed through the pickup or amp the more currant that passes through the pickup/amp the older and more warn the resistors get and the magnets get worn out and the valves/tubes get more worn. the end result is a deep warm tone. its really nice it just sounds way better than a new pickups/amps. my les paul custom is only eight years old but the pickups are getting a really nice and warm tone sounds great but the pickups that are in my 335 are nearly thirty years old their the best pickups in any of my guitars.