13BridgeStacked Push/PullVolume/PickupPan ControlStacked Push/PullBass/TrebleTone ControlBridgeStacked Push/PullVolume/PickupPan ControlMidTone Control Stacked Bass/TrebleTone ControlDolphin Pro I and Dolphin SN™ TCS™All Dolphin Pro I basses come with an onboard active preamp.Push/Pull Stacked Pick-up Pan/Volume Control (Part #M88552 - 500K, 2 X25K)*Push/Pull Stacked Tone Control (Part #M84110 – 2 X 100K)**InfinityAll Infinity basses come either with an onboard active MEC 3-way cir-cuit, or Seymour Duncan Basslines preamp (upto 2001 or optional).Push/Pull Volume/Pickup Pan Control (Part #M88552 -2 x 25K, 500K)*Mid Tone Control (Part #M85100 - 100K)Push/PullStacked Tone Control (Part #M84110 - 2 X 100K)*** By pulling on the volume knob, you will bypass the onboard active preamp, which effectively deactivates the tone controls.**This stacked knob controls both the treble and the bass. The top knob boosts or cuts the treble and the bottom knob boosts or cuts the bass. Pulling the top switchesthe Twinjazz pickup to single coil.* By pulling on the volume knob, you will bypass the onboard preamp (MEC)* By pulling on the volume knob you will activate the slap contour EQ curve on the Seymour Duncan Basslines preamp. This curve will boost the bass frequencies and thehigh frequencies, while slightly cutting the mid frequencies. Pulling the knob does not deactivate the active preamp (Seymour Duncan Basslines).**The top knob boosts or cuts the treble and the bottom knob boosts or cuts the bass.By pulling the treble knob the Humbucker gets splitted.Infinity SN™ TCS™All Infinity SN™ TCS™ basses come with an onboard active MEC 2-waycircuit.Push/Pull Volume Control (Part #M84500 - 500K)*Pickup Pan Control (Part #M85252 - 25K)Push/PullStacked Tone Control (Part #M84110 - 2 X 100K)*** By pulling on the volume knob, you will bypass the onboard active preamp, which effectively deactivates the tone controls.**The upper part boosts or cuts the treble, the lower part boosts or cuts the lows. By pulling the treble knob, the humbucker gets splitted.BridgePush/PullVolume ControlPickupPan Control Stacked Push/PullBass/TrebleTone Control