Ibanez SR400EQM 4-String Bass, Stained Cosmic Blue Burst

With the bass held in the playing position, there are three small knobs closest to the lower edge of the body. Directionally, from the lower bout towards the neck knobs are treble boost/cut, mid boost/cut, and bass boost/cut. There are two larger knobs above these, closer to the bridge. The knob closest to the neck controls volume, and the knob next to it is the pickup balancer control. There is a 3-way power tap switch next to the balancer knob. When the switch is in neck position, the humbuckers are tapped. When the switch is in center position, the humbuckers are in series. when the switch is in bridge position, the humbuckers are in power tap mode, which is tapped with additional low end added.