sentences:  The sound of the old Toaster pickups has been associated with such musical acts as the Byrds and the Beatles, while the newer Hi-Gain pickups are more representative of the sound of groups such as the Smiths and R.E.M.For each of the 330's two pickups there are two knobs that control tone and volume.However in 1961, a fifth "blend" knob was added to the guitar to expand the possible adjustment of the guitar's tone.