15BridgePush/PullVolume ControlPickupPan Control Stacked Bass/TrebleTone ControlBuzzard Bass Bolt-on and Ltd. J.E.All Buzzard basses come with an onboard 2-way active preamp.Push/Pull Volume Control (Part #M84500 - 500K)*Pick-up Pan Control (Part #M85252 – 25K)Stacked Tone Control (Part #M85110 – 2 X 100K)* By pulling on the volume knob, you will bypass the onboard active preamp, which effectively deactivates the tone controls.BridgePush/PullVolumeControlPickupPan ControlMidTone ControlStrykerAll Stryker basses come with an onboard active MEC 3-way circuit.Push/Pull Volume (Part #M84500 500K)*Pickup Pan Control (Part #M85252, 2x25K)Push/Pull Mid Tone Control (Part #M84100 - 100K)**Bass/Treble Tone Control (Part #M85110 - 100K)* By pulling on the volume knob, you will bypass the onboard preamp.** By pulling on the mid tone knob you shift the mid frequency from 400 Hz to 800 HzAlienNotch Filter: This is a fixed level, variable-frequency filter for eliminating feedback or unwan-ted resonance. The affected frequency is variable from 40 to 500 Hz. The Notch filter is effecti-vely off in the full counter-clockwise position.Volume Control:Controls the overall gain of the Prefix Plus™. Goes from very quiet to very loud.Bass Control: This is a boost/cut shelving tone control. The center detent yields a flat response.Contour:This is a Wide-range semi-parametric filter. It is used to selectively shape the instru-ment´s tone.The Contour Level slider controls the amount of boost or cut applied to theselected Contour Frequency. The center detent yields a flat response.The Contour Frequencyslider determines the frequency band that is boosted or cut by the Contour Level control. Thefrequency is variable from 250 to 10 kHz.Treble Control:This is a boost/cut shelving tone control. The center detent yields a flat response.Brilliance Control: This is a resonant style boost/cut filter. When boosted, the Brilliancecontrol can add presence to your sound or brighten up dead strings.Phase Switch: The Phase switch compensates for acoustic phase differences that oftenoccur between instrument and speaker. It can be used as a tone filter at low volume levels ora feedback filter at high levels. The Phase switch can correct any electrical phase differencebetween the Prefix™ system and an outboard instrument microphone. Flip the Phase switchseveral times and use your ear to find the optimum setting. The best position for the Phaseswitch may change, depending on the sound system and/or venue acoustics.Bass/TrebleTone ControlBridgeVolumeControlHellborg Signature BassThe passive MEC Soapbar singlecoil humcancelling pickup iscontrolled by a single volume pot.Volume (Part X 60080)Electronic ( Part X 60078)