5-strings electric bass from Jackson JS series. The Jackson JS Series Spectra Bass JS3QV is an all-new leviathan instrument where versatile style and enormous sound collide. The Spectra Bass JS3QV provides a sound that is as unique as the bassist playing it. Whether it be funk, hard rock or gospel, dual passive Jackson medium-output humbucking pickups create a monstrous low-end growl, while a HiMass bridge provides rock-solid stability, improved sustain and bolder tone.