Seymour Duncan STC-3ASB Fundamental 3-Band Tone Circuit For Active Pic
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Seymour Duncan STC-3ASB Fundamental 3-Band Tone Circuit For Active Pickups
In stock
- SKU
- 11993-19
Description
Seymour Duncan STC-3ASB Fundamental 3-Band Tone Circuit For Active Pickups
The STC-3ASB is a versatile active preamp circuit built for players who need surgical control over their instrument's tone without unnecessary complexity. This three-band EQ system integrates seamlessly into existing control cavities, offering professional-grade filtering and shaping in a compact footprint that doesn't require extensive routing or modification.
Electronics & Control Architecture
The circuit features a comprehensive control layout with dedicated bass and treble controls, midrange control, master volume, and blend control — giving you independent command over every frequency range. A frequency contour switch accessible via pull-up on the volume control adds an additional EQ shaping option, while two onboard trim pots allow fine-tuning of the frequency contour characteristics to match your pickup output and playing style.
Power & Installation
The STC-3ASB operates on a single 9V battery, with the option to wire two 9V batteries in series for increased headroom and extended battery life. Installation requires only four control knobs and a single 9V battery cavity, making retrofitting straightforward on most instruments. The kit ships with high-quality pre-wired potentiometers on a complete harness, battery clip, and black anodized knurled dome-style knobs — eliminating guesswork and reducing soldering requirements.
Key Features
- Three-band active EQ: dedicated bass, midrange, and treble controls
- Master volume control for overall output management
- Blend control for mixing pickup levels
- Frequency contour switch engaged via pull-up volume control
- Two trim pots on circuit board for frequency contour adjustment
- Single 9V battery operation with series-wiring option for two batteries
- Pre-wired potentiometer harness included
- High-quality potentiometers with 4-knob configuration
- Black anodized knurled dome-style control knobs included
- Battery clip provided for easy installation
- Compatible with active pickup systems
- Designed for instruments with standard 4-knob control cavity
The STC-3ASB delivers studio-grade tone shaping in a straightforward, reliable package that respects both your instrument's character and your personal sonic vision.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | United States |
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At a Glance
The Seymour Duncan STC-3ASB is a three-band active preamp circuit that gives you surgical control over bass, mids, treble, and pickup blend without complex routing or modifications. Built for intermediate to professional players running active pickups, it installs into a standard 4-knob cavity and runs on a single 9V battery (or two in series for extended headroom). Choose it for studio-quality tone shaping and reliable live performance in drop tunings and extended-range setups.
Who This Is For
Great for
- ✓ Home Recording
- ✓ Studio Sessions
- ✓ Extended Range
- ✓ Drop Tunings
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What pickups does the STC-3ASB work with?
The STC-3ASB is designed for active pickup systems. It is compatible with instruments that use active pickups and includes all necessary components for integration into a standard 4-knob control cavity.
How much modification does installation require?
Installation is straightforward and requires only a standard 4-knob control cavity and a single 9V battery cavity — no extensive routing or complex soldering. The kit ships with a pre-wired potentiometer harness and battery clip, reducing installation difficulty significantly.
Can I adjust the EQ characteristics after installation?
Yes. The circuit includes two onboard trim pots that allow you to fine-tune the frequency contour characteristics to match your specific pickup output and playing style, even after installation.
What is the frequency contour switch and how do I use it?
The frequency contour switch is an additional EQ shaping option that engages via a pull-up function on the volume control, giving you an extra layer of tone adjustment without a dedicated knob.
Can I extend battery life?
Yes. The circuit operates on a single 9V battery by default, but you can wire two 9V batteries in series for increased headroom and extended battery life.
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