1 definition by Marco A. Vinci II
a type of guitar/bass pickup powered by a 9volt battery which is used in difference than a normal passive pickup to get a different distinguished tone out of your instrument. some passive pickup fans have classified the active pickup as sounding fake and crappy.
John's battery in his active bass was low in voltage and a distorition started to come out of his sound.
by Marco A. Vinci II November 12, 2006