Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pi
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Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups
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- SKU
- 11993-18
Description
Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups
The STC-2PSB is a pre-wired 2-band EQ circuit engineered to give passive pickup systems studio-grade tone shaping in the recording environment. This circuit combines intuitive midrange and harmonic controls with a dedicated blend function, enabling producers and engineers to dial in precisely the character needed for tracking and mixing without losing the natural dynamics of passive sources.
Controls & Tone Shaping
Three independent controls—bass, treble, and master volume—work alongside a dedicated blend control to shape your signal with surgical precision. The frequency contour switch, engaged by pulling up the volume control, adds two adjustable trim pots on the circuit board for preset EQ voicing optimized for fretless harmonics and mid-range boost.
Power & Installation
The circuit operates on a single 9V battery housed in the control cavity, with the option to wire two 9V batteries in series for increased headroom and extended battery life. The pre-wired harness arrives complete with high-quality potentiometers, battery clip, and black anodized knurled dome-style knobs, requiring only standard control cavity space for three knobs and one battery.
Key Features
- 2-band EQ with bass and treble controls
- Master volume control with integrated frequency contour switch
- Blend control for pickup mixing
- Two adjustable trim pots on circuit board for preset frequency contour tuning
- Frequency contour optimized for fretless harmonics and mid-range boost
- Pre-wired harness with high-quality potentiometers
- Black anodized knurled dome-style control knobs included
- Single 9V battery operation in control cavity
- Supports dual 9V battery wiring in series for added headroom
- Designed for passive pickup systems
The STC-2PSB maintains the transparent response of passive pickups while delivering transparent, studio-grade tone control in a compact footprint—ideal for tracking sessions where capture clarity and post-production flexibility are paramount.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | United States |
Reviews
At a Glance
The STC-2PSB brings studio-grade 2-band EQ to passive pickup recording chains, giving producers and engineers intuitive bass, treble, and master volume control plus a frequency contour switch tuned for fretless harmonic enhancement and mid-range presence. The pre-wired harness and adjustable trim pots let you dial in consistent voicing across sessions and lock in your preferred EQ flavor without external gear. Ideal for home and professional recordings where passive pickup tone needs surgical shaping and flattering midrange boost.
Who This Is For
Great for
- ✓ Studio Sessions
- ✓ Home Recording
- ✓ Fretless Bass
- ✓ Passive Pickup Customization
Not the best pick for
- – Beginners
- – Plug-and-Play Solutions
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What comes in the box and what do I need to install it?
The kit includes a pre-wired harness with potentiometers, battery clip, black anodized knurled knobs, and all necessary wiring. You need standard control cavity space for three knobs and one 9V battery; no soldering required if your instrument has compatible cavities.
Is this suitable for beginners, or do I need advanced setup skills?
This is designed for intermediate to professional players. Installation requires comfort with basic wiring and routing; beginners should consult a qualified technician or luthier for proper cavity preparation and integration.
Can I use two 9V batteries instead of one?
Yes, the circuit supports dual 9V batteries wired in series for increased headroom and extended battery life if your control cavity permits the space.
How does the frequency contour switch work?
Pull up the volume knob to engage the contour switch, which activates two adjustable trim pots on the circuit board to recall preset EQ voicing optimized for fretless harmonics and mid-range boost.
Will this circuit color the tone of my passive pickups?
No—the STC-2PSB is voiced to preserve the natural response of passive pickups while adding focused midrange and treble control, delivering studio-grade tone shaping without a radical character shift.
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