Seymour Duncan STC-3PSB Fundamental 3-Band Tone Circuit For Passive Pi

Seymour Duncan STC-3PSB Fundamental 3-Band Tone Circuit For Passive Pickups

In stock

SKU
11993-20
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Description

Basslines® and Steve Bailey Take Fretless Bass to the Extreme Fundamental Fretless™ Pickup and Tone Circuit™ System
Wednesday,October 15,1997

Santa Barbara,California - Steve Bailey is the consummate bassist. He’s performed everywhere from smoky clubs to mega-dome stadiums. His tonal demands range from the bite of a blues trio to the edge of a power trio to the warmth of a jazz trio to the Extremes of a bass duo. From the studio to the stage,Steve wants to use one set of pickups and electronics that allow him to meet all these diverse challenges.

Basslines® and Steve have joined forces to release the Fundamental Fretless™ system,Steve’s signature model pickups and Tone Circuit™. It’s the first of it’s kind designed specifically for electric fretless bass and it’s the result of many hours of R&D and sound testing under live and studio conditions.

The active pickups are designed for use in four-,five-,and six-string basses,with specific calibrations for neck and bridge position. The four- and five-string versions are traditional Fender® Jazz Bass® size. The six-string pickup is housed in Basslines’ ”Phase I” soapbar cover. In addition,Basslines offers a retrofit system for Aria’s Steve Bailey signature model six-string bass.

The Tone Circuit is available with either two or three bands of focused EQ,together with a switch that engages a frequency contour optimized to bring out fretless harmonics as well as mid-range boost. The switch is engaged by pulling up on the volume knob. The 9 volt Tone Circuit was designed to also accommodate 18 volt power for enhanced headroom.

All mounting hardware and a detailed wiring schematic are included. The Fundamental Fretless™ system is hand built in Santa Barbara,California.

More Information
Condition New
Country of Manufacture United States
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At a Glance

The Seymour Duncan STC-3PSB is a 3-band passive tone circuit engineered to unlock warm, articulate, and harmonically rich tones from passive bass pickups without requiring a battery. Built for intermediate to professional players, this circuit excels in jazz, funk, and studio work where versatile EQ control and low noise are essential—making it ideal for bassists who need one reliable setup to move from intimate trio gigs to larger venues.

Who This Is For

Great for

  • Jazz
  • Funk
  • Studio Sessions
  • Live Performance

Not the best pick for

  • Metal
  • Punk

Skill level: Intermediate · Advanced · Professional

Frequently Asked Questions

What bass styles work best with this tone circuit?

The STC-3PSB excels in jazz, funk, studio sessions, and live performance where warm, articulate, and harmonic-rich tones are valued. It is not designed for metal or punk applications.

Do I need a battery to power this circuit?

No. The STC-3PSB is a passive 3-band tone circuit that requires no external power, keeping your signal chain clean and eliminating battery maintenance concerns.

What skill level is required to install this?

This circuit is suitable for intermediate to professional players and techs. All mounting hardware and a detailed wiring schematic are included to guide the installation.

How does this compare to active tone systems?

Unlike active circuits from brands like Bartolini or Aguilar, the STC-3PSB provides passive EQ control without the need for batteries or powered headroom, making it lighter on maintenance while delivering versatile tone shaping for passive pickups.

Can this circuit bring out fretless harmonics?

Yes. The circuit includes a frequency contour switch that is specifically optimized to enhance fretless harmonics and provide mid-range boost when engaged via the volume knob.

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